C Language Programming Questions

#include<stdio.h>
#include<conio.h>
int main()
{
float r,ar,c;

printf("Enter The Radius Of The Circle:");
scanf("%f",&r);
ar=3.14*r*r;
c=2*3.14*r;
printf("The Area Of The Circle is %f",ar);
printf("The Circumferance Of The Circle is %f",c);
getch();	
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
char ch;
printf("Enter The Character:");
ch=getche();
printf("Ascii Value of %c is %u",ch,ch);
getch();
return(0);	
}

#include<stdio.h>
int main()
{
    int fnum ,snum;
    printf("Enter the first number.\n");
    scanf("%d",&fnum);
    printf("Enter the second number.\n");
    scanf("%d",&snum);

    int min = fnum > snum ? snum : fnum;

    // Code for calculating HCF of two numbers.

    for(int i = min; i >= 1; i--)
    {
        if(fnum % i == 0 && snum % i == 0)
        {
            printf("%d is The HCF of %d and %d.\n",i, fnum , snum);
            break;
        }
    }
}

#include<stdio.h>
int main()
{
    int fnum , snum;
    printf("Enter the first number.\n");
    scanf("%d",&fnum);
    printf("Enter the second number.\n");
    scanf("%d",&snum);

    int max = fnum > snum ? fnum : snum;

//    code for calculating LCM of two number.

      for(int i = max; i <= fnum * snum; i = (i + max))
      {
          if(i % fnum == 0 && i % snum == 0)
          {
              printf("%d is the LCM of %d and %d.\n",i , fnum , snum);
              return;
          }
      }

}

#include<stdio.h>
#include<conio.h>
int main()
{
float b,h,ar;
printf("Enter The Base Of The Triangle:");
scanf("%f",&b);
printf("Enter The Height Of the Triangle:");
scanf("%f",&h);
ar=0.5*b*h;
printf("The Area Of The Triangle Is %f",ar);
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
char fname[20],mname[20],lname[20];
printf("Enter The Full Name:");
scanf("%s%s%s",fname,mname,lname);
printf("The Abbreviated Name is %c%c%s",fname[20],mname[20],lname);
return(0);	
}

#include<stdio.h>
#include<conio.h>
int main()
{
float p,r,i;
int t;
printf("Enter The Principal Amount:");
scanf("%f",&p);
printf("Enter The Rate Of The Interest:");
scanf("%f",&r);
printf("Enter The Time Period:");
scanf("%d",&t);
i=(p*r*t)/100;
printf("The Amount Of Interest is %f",i);
getch();
return(0);	
}

#include<stdio.h>
#include<conio.h>
int main()
{
float bs,da,hra,p,t;
printf("Enter The Basic Salary:");
scanf("%f",&bs);
printf("Enter The Dearness Allowance:");
scanf("%f",&da);
printf("Enter The House Rent Allowance:");
scanf("%f",&hra);
printf("Enter The P-Tax:");
scanf("%f",&p);
t=bs+da+hra-p;
printf("The given salary is %f",t);
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
float a,b,c,d,e,t,p;
printf("Enter the marks of the first subject:");
scanf("%f",&a);
printf("Enter the Marks Of the second subject:");
scanf("%f",&b);
printf("Enter the Marks Of the third subject:")	;
scanf("%f",&c);
printf("Enter the Marks Of the fourth subject:");
scanf("%f",&d);
printf("Enter the Marks Of the fifth subject:");
scanf("%f",&e);
t=a+b+c+d+e;
p=(t/500)*100;
printf("The total marks is %f",t);
printf("The percentage of marks is %f",p);
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
float g,c;
printf("Enter The Temperature in Celcius Scale:");
scanf("%f",&c);
g=1.8*c+32;
printf("The temperature in farenheit scale is %f",g);
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
printf("char is %d bytes",sizeof(char));
printf("unsigned char is %d bytes",sizeof(unsigned char));
printf("integer is %d bytes",sizeof(int));
printf("short integer is %d bytes",sizeof(short int));
printf("unsigned short integer is %d bytes",sizeof(unsigned short int));
printf("long integer is %d bytes",sizeof(long int));
printf("unsigned long integer is %d bytes",sizeof(unsigned long int));
printf("float is %d bytes",sizeof(float));
printf("double is %d bytes",sizeof(double));
printf("long double is %d bytes",sizeof(long double));
getch();
return(0);	
}

#include<stdio.h>
#include<conio.h>
int main()
{
int n,fact=1;
printf("Enter The Number:");
scanf("%d",&n);
while(n>1)
{
  fact*=n;
  n--;
}
printf("The factorial of the number is %d",fact);
getch();
return(0);	
}

#include<stdio.h>
#include<conio.h>
int main()
{
int n;
printf("Enter the number:");
scanf("%d",&n);
printf("%d%d%d",n,n*n,n*n*n);
getch();
return(0);	
}

#include<stdio.h>
#include<conio.h>
int main()
{
float r,ar;
printf("Enter The Radius Of The circle:");
scanf("%f",&r);
ar=3.14*r*r;
printf("The Area Of The Circle Is %f",ar);
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
int a,b,c;
printf("Enter The Three Numbers:");
scanf("%d%d%d",&a,&b,&c);
if(a>b && a>c)
{
  printf("The Greatest Of Three Numbers Is %d",a);
  
  }
else
if(b>a && b>c)
{
  printf("The Greatest Of Three Numbers Is %d",b);
  }	
else
printf("The Greatest OF The Three Numbers Is %d",c);
getch;
return(0);
  
}

#include<stdio.h>
#include<conio.h>
int main()
{
int i,n,table=1;
printf("Enter The Number:");
scanf("%d",&n);
for(i=1;i<=10;i++)
{
  table=n*i;
  printf("The Table Of The Number Is %d",table);
}	
getch();
return(0);
}

#include <stdio.h>
int main()
{
    int fnum , snum ,tnum;
    printf("Enter the first number.\n");
    scanf("%d",&fnum);
    printf("Enter the second number.\n");
    scanf("%d",&snum);
    printf("Enter the third number.\n");
    scanf("%d",&tnum);

    // 1. Method.

    if(fnum > snum && fnum > tnum)
    {
        printf("%d is Greater than %d and %d.\n",fnum , snum , tnum);
    }
    else if(snum > fnum && snum > tnum)
    {
        printf("%d is Greater than %d and %d.\n",snum , fnum, tnum);
    }
    else if(tnum > fnum && tnum > snum)
    {
        printf("%d is Greater than %d and %d.\n",tnum , fnum ,snum);
    }


    // 2. Method. this method is better than first method.

    if(fnum > snum && fnum > tnum)
    {
        printf("%d is Greater than %d and %d.\n",fnum , snum , tnum);
    }
    else if(snum > tnum)
    {
        printf("%d is Greater than %d and %d.\n",snum , fnum, tnum);
    }
    else
    {
        printf("%d is Greater than %d and %d.\n",tnum , fnum ,snum);
    }
}

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the number.\n");
    scanf("%d",&num);

    // Condition.

    if(num > 0)
    {
        printf("%d is Positive Number.\n",num);
    }
    else if(num < 0)
    {
        printf("%d is Negative Number.\n",num);
    }
    else
    {
        printf("%d is Zero.\n",num);
    }
}

#include <stdio.h>
int main()
{
    char ch;
    printf("Enter the Character.\n");
    scanf("%c",&ch);

    if((ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') || (ch == 'A' || ch == 'E' || ch == 'I' || ch == 'U'))
    {
        printf("%c is VoWel.\n",ch);
    }
    else
    {
        printf("%c is Cosonant.\n",ch);
    }
}

//OUTPUT.
//Enter the Character.
//y
//y is Cosonant.
//
//********************
//
//Enter the Character.
//a
//a is VoWel.

#include <stdio.h>
int main()
{
    char ch;
    printf("Enter the Character.\n");
    scanf("%c",&ch);

//    Condition. or Logic

    if((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z'))
    {
        printf("%c is Alphabet.\n",ch);
    }
    else
    {
        printf("%c is not Alphabet.\n",ch);
    }
}

//OUTPUT
//Enter the Character.
//a
//a is Alphabet.
//
//*********************
//
//Enter the Character.
//7
//7 is not Alphabet.

#include <stdio.h>
int main()
{
    char ch;
    printf("Enter the Character.\n");
    scanf("%c",&ch);

    // Logic or Conditon.

    if(ch >= 'a' && ch <= 'z')
    {
        printf("%c is LowerCase Character.\n",ch);
    }
    else if(ch >= 'A' && ch <= 'Z')
    {
        printf("%c is UpperCase Character.\n",ch);
    }
    else if(ch >= '0' && ch <= '9')
    {
        printf("%c is Digit.\n",ch);
    }
    else
    {
        printf("%c is Special Character.\n",ch);
    }
}

//OUTPUT
//Enter the Character.
//#
//# is Special Character.

//******************************

//Enter the Character.
//A
//A is UpperCase Character.

//*******************************

//Enter the Character.
//x
//x is LowerCase Character.

//*******************************

//Enter the Character.
//8
//8 is Digit.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the number.\n");
    scanf("%d",&num);

    // Logic

    if(num % 2 == 0)
    {
        printf("%d is Even Number.\n",num);
    }
    else {
        printf("%d is Odd Number.\n",num);
    }
}

//OUTPUT

//Enter the number.
//7
//7 is Odd Number.

//**********************

//Enter the number.
//24
//24 is Even Number.

#include <stdio.h>
int main()
{
    int fnum , snum;
    printf("Enter the First number.\n");
    scanf("%d",&fnum);
    printf("Enter the second number.\n");
    scanf("%d",&snum);

    // Logic

    if(fnum > snum)
    {
        printf("%d is Greater than %d\n",fnum , snum);
    }
    else {
        printf("%d is Greater than %d\n",snum , fnum);
    }
}

//OUTPUT

//Enter the First number.
//8
//Enter the second number.
//7
//8 is Greater than 7

#include <stdio.h>

int main()
{
    int ageOfVoter;
    printf("Enter Your Age.\n");
    scanf("%d",&ageOfVoter);

    if(ageOfVoter >= 18)
    {
        printf("You Are Eligible.\n");
    }
    else
    {
        printf("You are Not Eligible.\n");
    }
}

//OUTPUT

//Enter Your Age.
//2
//You are Not Eligible.

//******************************

//Enter Your Age.
//23
//You Are Eligible.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the Number.\n");
    scanf("%d",&num);

//    logic

    if(num % 5 == 0 && num % 11 == 0)
    {
        printf("Yes %d is divisible by 5 and 11.\n",num);
    }
    else
    {
        printf("%d is not divisible by 5 and 11.\n",num);

    }
}

//OUTPUT

//Enter the Number.
//55
//Yes 55 is divisible by 5 and 11.

//**************************************

//Enter the Number.
//77
//77 is not divisible by 5 and 11.

#include <stdio.h>
int main()
{
    int weekNumber;
    printf("Enter a Week Number.\n");
    scanf("%d",&weekNumber);

    // Logic

    if(weekNumber == 1)
    {
        printf("Sunday.\n");
    }
    else if(weekNumber == 2)
    {
        printf("Monday.\n");
    }
    else if(weekNumber == 3)
    {
        printf("Tuesday.\n");
    }
    else if(weekNumber == 4)
    {
        printf("Wednesday.\n");
    }
    else if(weekNumber == 5)
    {
        printf("Thursday.\n");
    }
    else if(weekNumber == 6)
    {
        printf("Friday.\n");
    }
    else
    {
        printf("Saturday.\n");
    }
}

#include <stdio.h>
int main()
{
    int monthNumber;
    printf("Enter the Month Number.\n");
    scanf("%d",&monthNumber);

    if(monthNumber == 1)
    {
        printf("31 days.");
    }
    else if(monthNumber == 2)
    {
        printf("28 / 29 days.");
    }
    else if(monthNumber == 3)
    {
        printf("31 days.");
    }
    else if(monthNumber == 4)
    {
        printf("30 days.");
    }
    else if(monthNumber == 5)
    {
        printf("31 days.");
    }
    else if(monthNumber == 6)
    {
        printf("30 days.");
    }
    else if(monthNumber == 7)
    {
        printf("31 days.");
    }
    else if(monthNumber == 8)
    {
        printf("31 days.");
    }
    else if(monthNumber == 9)
    {
        printf("30 days.");
    }
    else if(monthNumber == 10)
    {
        printf("31 days.");
    }
    else if(monthNumber == 11)
    {
        printf("30 days.");
    }
    else if(monthNumber == 12)
    {
        printf("31 days.");
    }

}

//OUTPUT

// Enter the Month Number.
// 12
// 31 days.

#include <stdio.h>
int main()
{
    int amount;
    int  twoThousand = 0 , fiveHundere = 0, twoHundred = 0, hundred = 0
        , fifty = 0 , twenty = 0 , ten = 0, five = 0 , two = 0, one = 0;
    printf("Enter the Amount.\n");
    scanf("%d",&amount);

    while(amount > 0)
    {
            if(amount >= 2000)
            {
                twoThousand++;
                amount -= 2000;
                continue;
            }
            if(amount >= 500)
            {
                fiveHundere++;
                amount -= 500;
                continue;
            }
            if(amount >= 100)
            {
                hundred++;
                amount -= 100;
                continue;
            }
            if(amount >= 50)
            {
                fifty++;
                amount -= 50;
                continue;
            }
            if(amount >= 20)
            {
                twenty++;
                amount -= 20;
                continue;
            }
            if(amount >= 10)
            {
                ten++;
                amount -= 10;
                continue;
            }
            if(amount >= 5)
            {
                five++;
                amount -= 5;
                continue;
            }
            if(amount >= 2)
            {
                two++;
                amount -= 2;
                continue;
            }
            if(amount >= 1)
            {
                one++;
                amount -= 1;
                continue;
            }
    }

    printf("%d : %d.\n",2000 , twoThousand);
    printf("%d : %d.\n",500 , fiveHundere);
    printf("%d : %d.\n",100 , hundred);
    printf("%d : %d.\n",50 , fifty);
    printf("%d : %d.\n",20 , twenty);
    printf("%d : %d.\n",10 , ten);
    printf("%d : %d.\n",5 , five);
    printf("%d : %d.\n",2 , two);
    printf("%d : %d.\n",1 , one);

}


//OUTPUT

//Enter the Amount.
//5299
//2000 : 2.
//500 : 2.
//100 : 2.
//50 : 1.
//20 : 2.
//10 : 0.
//5 : 1.
//2 : 2.
//1 : 0.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the Number.\n");
    scanf("%d",&num);

//    Logic

    while(num != 0)
    {
        printf("%d",num % 10);
        num /= 10;
    }

}

//OUTPUT
//
//Enter the Number.
//12345

#include <stdio.h>
int main()
{
    int n;
    printf("Enter the Number.\n");
    scanf("%d",&n);

    int sum_of_NaturalNumber;
    int temp = n; // Copy value of n into temp variable.

    while(n != 0)
    {
        sum_of_NaturalNumber += n;
        n--;
    }

    printf("The Sum %d Natural Number is %d.\n",temp , sum_of_NaturalNumber);
}

//OUTPUT
//
//Enter the Number.
//10
//The Sum 10 Natural Number is 55.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the Number.\n");
    scanf("%d",&num);

//    Logic

//    1. Method

      int first = 0 , second = 1 , result = 0;

      for(int i = 0; i < num; i++)
      {
          if(i <= 1)
          {
              printf("%d + ",i);
          }
          else
          {
              result = first + second;
              first = second;
              second = result;

              if(i != num -1)
              {
                  printf("%d + ",result);
              }
              else
              {
                  printf("%d.\n",result);
              }
          }
      }

//     2. Method   this logic is little bit tricky.

//       int this method we use previous variable like ( first , second or result)
        first = 0;
        second = 1;
        result = 0;

        for(int i = 0; i < num; i++)
        {
            if(i != num -1)
            {
                printf("%d + ",first);
            }
            else
            {
                printf("%d.\n",first);
            }
            result = first + second;
            first = second;
            second = result;

        }
}

//OUTPUT
//
//Enter the Number.
//10
//0 + 1 + 1 + 2 + 3 + 5 + 8 + 13 + 21 + 34.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the Number.\n");
    scanf("%d",&num);

//    Logic

    int temp = num; // copy the value of num into temp variable.
    int reverseNumber = 0;

    while(num > 0)
    {
        int lastDigit = num % 10; // Get Last digit from the number.
        num /= 10;  // Remove Last digit from the number.
        reverseNumber = reverseNumber * 10 + lastDigit;

    }

    printf("Reverse of %d is %d.\n",temp , reverseNumber);

}

//OUTPUT
//
//Enter the Number.
//12345
//Reverse of 12345 is 54321.

#include <stdio.h>
int main()
{
    int num;
    int revNum;
    printf("Enter the Number.\n");
    scanf("%d",&num);

    // Code for Reversing a num.

    int temp = num;
    while(temp != 0)
    {
        int lastDigit = temp % 10;
        temp /= 10;
        revNum = revNum * 10 + lastDigit;
    }

//    reverse of the number equal to actual number then the number is Palindrome.

    if(revNum == num)
    {
        printf("%d is Palindrome.\n",num);
    }
    else
    {
        printf("%d is Not Palindrome.\n",num);
    }
}

//OUTPUT

//Enter the Number.
//123
//123 is Not Palindrome.

//***************************

//Enter the Number.
//121
//121 is Palindrome.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the number.\n");
    scanf("%d",&num);

    int countOfDigit = 0;
    int temp = num;

//    Logic

    while(num != 0)
    {
        countOfDigit++;
        num /= 10;
    }

    printf("%d digits are Present in %d.\n",countOfDigit, temp);
}

//OUTPUT

//Enter the number.
//747932
//6 digits are Present in 747932.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the Number.\n");
    scanf("%d",&num);

    int binary = 0;
    int i = 1;
    printf("Binary of %d is ",num);

//    Logic

    while(num != 0)
    {
        int lastDigit = num % 2;
        num /= 2;
        binary = binary + lastDigit * i;
        i *= 10;
    }

    printf("%d.\n",binary);
}

//OUTPUT

//Enter the Number.
//5
//Binary of 5 is 101.

#include <stdio.h>
int main()
{
    int num;
    printf("Enter the Binary Number.\n");
    scanf("%d",&num);

    int decimal = 0;
    int i = 1;
    printf("Decimal of %d is ",num);

//    Logic

    while(num != 0)
    {
        int lastDigit = num % 10;
        num /= 10;
        decimal = decimal + lastDigit * i;
        i *= 2;
    }

    printf("%d.\n",decimal);
}

//OUTPUT

//Enter the Binary Number.
//101
//Decimal of 101 is 5.

#Loading....

#include <stdio.h>

void main()
{
    int num;
    
    printf("Enter a number.\n");
    scanf("%d",&num);

    for(int i = 1; i <= num; i++) {
        printf("%d\n",i);
    }

}

// OUTPUT

// Enter a number.
// 5 
// 1
// 2
// 3
// 4
// 5

#include <stdio.h>
#include <stdbool.h>

void main()
{
    int start = 1, end = 100;

    for(int i = start; i <= end; i++) {

        // Logic for check given number is prime or not...
        bool flag = true;

        for(int j = 2; j <= i / 2; j++) {
            if(i % j == 0) {
                flag = false;
                break;
            }
        }

        if(flag) {
            printf("%d\t",i);
        }
    }

    printf("\n"); // it is for new line.
}

#include <stdio.h>

void main()
{
    char ch = 'a';

    for(int i = 0; i <= 25; i++) {
        printf("%c\t",ch + i);
    }

    printf("\n");
}

// OUTPUT

// a       b       c       d       e       f       g       h       i
//   j     k       l       m       n       o       p       q       r
//   s     t       u       v       w       x       y       z

#include 

void main()
{
    int tableNumber;
    printf("Enter a Table Number.\n");
    scanf("%d",&tableNumber);

    for(int i = 1; i <= 10; i++) {
        printf("%d x %d = %d\n", tableNumber, i , tableNumber * i);
    }
}

// OUTPUT

// Enter a Table Number.
// 5
// 5 x 1 = 5  
// 5 x 2 = 10 
// 5 x 3 = 15 
// 5 x 4 = 20 
// 5 x 5 = 25 
// 5 x 6 = 30 
// 5 x 7 = 35 
// 5 x 8 = 40 
// 5 x 9 = 45 
// 5 x 10 = 50

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#Loading....

#include<stdio.h>
#include<conio.h>
int main()
{
int x;
float a,b,c,f;
printf("1.For Farenheit To Celcius Scale:");
printf("2.For Celcius To Farenheit Scale:");
printf("Enter Your Choice:");
scanf("%d",&x);
switch(x)
{
case 1:
printf("Enter The Value Of Faranheit Temperature:");
scanf("%f",&a);
c=5*(a-32)/9;
printf("The Celcius Temperature is %f",c);
break;
case 2:
printf("Enter The Value Of Celcius Temperature:");
scanf("%f",&b);
f=9*(b/5)+32;
printf("The Farenheit Temperature Is %f",f);
break;
default:
printf("Enter A Correct Choice");	
}
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
int day;
printf("Enter The Weekday number (1-7):");
scanf("%d",&day);
switch(day)
{
case 1:
printf("1-Sunday");
break;
case 2:
printf("2-Monday");
break;
case 3:
printf("3-Tuesday");
break;
case 4:
printf("4-Wednesday");
break;
case 5:
printf("5-Thursday");
break;
case 6:
printf("6-Friday");
break;
case 7:
printf("7-Saturday");
break;
default:
printf("Enter A Correct Day:");

}
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
int a,b,r;
char op;
printf("Enter An Expression:");
scanf("%d%c%d",&a,&op,&b);
switch(op)
{
case '+':
r=a+b;
break;
case '-':
r=a-b;
break;
case '*':
r=a*b;
break;
case '/':
r=a/b;
break;
default:
printf("Enter A Correct Expression:");	
  
}
printf("The Result Is %d",r);
getch();
return(0);

}

#include<stdio.h>
#include<conio.h>
int main()
{
int score;
printf("Enter The Score(0-100):");
scanf("%d",&score);
switch(score/10)
{
case 10:
case 9:
printf("Grade:A");
break;
case 8:
printf("Grade:B");
break;
case 7:
printf("Grade:C");
break;
case 6:
printf("Grade:D");
break;
case 5:
printf("Grade:E");
break;
default:
printf("Grade:F");
break;
}
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
float r,h,c,v;
int ch;
printf("1.circumferance of the cylinder:")	;
printf("2.volume of the cylinder:");
printf("Enter The Choice:");
scanf("%d",&ch);
switch(ch)
{
case 1:
{
float r,c;
printf("Enter The Radius Of The Circular Base Of The Cylinder:");
scanf("%f",&r);
c=2*3.14*r;
printf("The Circumferance of the cylinder is %f",c);	
break;	
}
case 2:
{
float r,h,v;
printf("Enter the radius:");
scanf("%f",&r);
printf("Enter The height:");
scanf("%f",&h);
v=3.14*r*r*h;
printf("the volume of the cylinder is %f",v);
break;
}
default:
printf("Enter a correct choice:");
break;
}
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
int month;
printf("Enter month number(1-12)");
scanf("%d",&month);
switch(month)
{
case 1:
printf("31 days");
break;
case 2:
printf("28 or 29 days");
break;
case 3:
printf("31 days");
break;
case 4:
printf("30 days");
break;
case 5:
printf("31 days");
break;
case 6:
printf("30 days");
break;
case 7:
printf("31 days");
break;
case 8:
printf("31 days");
break;
case 9:
printf("30 days");
break;
case 10:
printf("31 days");
break;
case 11:
printf("30 days");
break;
case 12:
printf("31 days");
break;
default:
printf("Enter A correct Month Number:");
break;
}
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
char e;
printf("Enter The Character:");
scanf("%c",&e);
if(e>=65 && e<=90 || e>=97 && e<=122)
{
  if(e>=97 && e<=122)
  {
    e-=32;
  }

    
switch(e)
{
case 'A':
case 'E':
case 'I':
case 'O':
case 'U':printf("It is a vowel");
break;
default:printf("It is a Consonant");
break;
  
  
}
}
else
printf("It is not an alphabet:");
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
int a,b;
printf("Enter The Two Numbers:");
scanf("%d%d",&a,&b);
switch(a>b)
{


case 1:
printf("The Maximum of the two numbers is %d",a);
break;
case 0:
printf("The Maximum Of the two numbers is %d",b);
break;
}
getch();
return(0);
}

#include<stdio.h>
#include<conio.h>
int main()
{
int n;
printf("Enter A Number:");
scanf("%d",&n);
switch(n%2)
{
case 0:printf("The Number Is Even:");
break;
case 1:printf("The Number Is Odd:");
break;	
  }	
getch();
return(0);
}

#include<stdio.h>
    #include<conio.h>
    int main()
    {
    int n;
    printf("Enter The Number:");
    scanf("%d",&n);
    switch(n>0)
    {
    case 1:
    printf("The Number Is Positive:");
    break;
    case 0:
    switch(n<0)
    {
    case 1:
    printf("The Number Is Negative:");
    break;
    case 0:
    printf("The Number Is Zero:");
    break;	
      }	
    break;
    }
    getch();
    return(0);
    }

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of an Array.\n");
    scanf("%d",&size);
    printf("Enter the Element of an Array.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

    // code for display data.
    printf("Elements Stored in an Array is\n");
    for(int i = 0; i < size; i++)
    {
        printf("%d ",arr[i]);
    }

}

//OUTPUT
//
//Enter the Size of an Array.
//5
//Enter the Element of an Array.
//1
//2
//3
//4
//5
//Elements Stored in an Array is
//1 2 3 4 5

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of an Array.\n");
    scanf("%d",&size);
    printf("Enter the Element of an Array.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

    // code for calculating mean.

    int sum = 0;

    for(int i = 0; i < size; i++)
    {
        sum += arr[i];
    }

    float mean = (float)sum / size;

    printf("%f is the Mean of an Array.\n",mean);

}

//OUTPUT
//
//Enter the Size of an Array.
//5
//Enter the Element of an Array.
//1
//2
//3
//4
//5
//3.000000 is the Mean of an Array.

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of Array.\n");
    scanf("%d",&size);
    printf("Enter the Element of Array.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

//    Logic

    int max = arr[0];

    for(int i = 1; i < size; i++)
    {
        if(arr[i] > max)
        {
            max = arr[i];
        }
    }

    printf("Greatest Element of an Array is %d.\n",max);
}

//OUTPUT
//
//Enter the Size of Array.
//5
//Enter the Element of Array.
//2
//5
//8
//19
//45
//Greatest Element of an Array is 45.

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of Array.\n");
    scanf("%d",&size);
    printf("Enter the Element of Array.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

//    Logic

    int minPosition = 0;
    int maxPosition = 0;

    for(int i = 1; i < size; i++)
    {
        if(arr[i] < arr[minPosition])
        {
            minPosition = i;
        }

        if(arr[i] > arr[maxPosition])
        {
            maxPosition = i;
        }
    }

    printf("Before Changing Content of an Array are.\n\n");
    for(int i = 0; i < size; i++)
    {
        printf("%d ",arr[i]);
    }
    printf("\n\n");

    int temp = arr[minPosition];
    arr[minPosition] = arr[maxPosition];
    arr[maxPosition] = temp;

    printf("After Changing Content of an Array are..\n\n");
    for(int i = 0; i < size; i++)
    {
        printf("%d ",arr[i]);
    }
    printf("\n\n");

}

//OUTPUT
//
//Enter the Size of Array.
//5
//Enter the Element of Array.
//1
//2
//3
//4
//5
//Before Changing Content of an Array are.
//
//1 2 3 4 5
//
//After Changing Content of an Array are..
//
//5 2 3 4 1

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of Array.\n");
    scanf("%d",&size);
    printf("Enter the Element of Array.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

//    Logic

//      1. Method

      int fLargest = arr[0];

      for(int i = 0; i < size; i++)
      {
          if(arr[i] > fLargest)
          {
              fLargest = arr[i];
          }
      }

      int sLargest = arr[0];

      for(int i = 0; i < size; i++)
      {
          if(arr[i] != fLargest && arr[i] > sLargest)
          {
              sLargest = arr[i];
          }

      }

    printf("%d is The Second Largest Element in an Array.\n",sLargest);


//    2. Method.

      // Here I am Using Previous declare Variable. ( fLargest or sLargest )
      fLargest = arr[0];
      sLargest = arr[0];

      for(int i = 1; i < size; i++)
      {
          if(arr[i] > fLargest)
          {
              sLargest = fLargest;
              fLargest = arr[i];
          }
      }

      printf("%d is The Second Largest Element in an Array.\n",sLargest);


}

//OUTPUT
//

//Enter the Size of Array.
//5
//Enter the Element of Array.
//1
//2
//3
//4
//5
//4 is The Second Largest Element in an Array.
//4 is The Second Largest Element in an Array.

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of Array.\n");
    scanf("%d",&size);
    printf("Enter the Element of Array.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

//    Logic

      for(int i = 0; i < size - 1; i++)
      {
          int temp = arr[i];

          for(int j = i + 1; j < size; j++)
          {
              if(arr[j] == temp)
              {
                  printf("Duplicate Element Present in an Array.\n");
                  return;
              }
          }
      }

      printf("Duplicate Element is not Present in an Array.\n");

}

//OUTPUT
//
//Enter the Size of Array.
//5
//Enter the Element of Array.
//1
//2
//3
//3
//5
//Duplicate Element Present in an Array.

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of Array.\n");
    scanf("%d",&size);
    printf("Enter the Element of Array.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

//    Logic

    int result  = 0;
    int i = 0;

    for(int i = 0; i < size; i++)
    {
        result = result * 10 + arr[i];
    }

    printf("%d is The Number Obtained form the given Digits.\n",result);



}

//OUTPUT
//

//Enter the Size of Array.
//5
//Enter the Element of Array.
//1
//2
//3
//4
//5
//12345 is The Number Obtained form the given Digits.

#include<stdio.h>
int main()
{
    int arr[40];
    int size;
    printf("Enter the Size of Arrays.\n");
    scanf("%d",&size);
    printf("Enter the Element of Arrays.\n");

    // code for read data.
    for(int i = 0; i < size; i++)
    {
        scanf("%d",&arr[i]);
    }

//    Logic

      int min = arr[0];
      int pos = 0;

      for(int i = 1; i < size; i++)
      {
          if(arr[i] < min)
          {
              pos = i;
              min = arr[i];
          }
      }

      printf("%d is the Smallest Number of an Array.\nAt index Number %d.\n",min,pos);


}

//OUTPUT
//
//Enter the Size of Arrays.
//5
//Enter the Element of Arrays.
//1
//2
//3
//4
//5
//1 is the Smallest Number of an Array.
//At index Number 0.

#include <stdio.h>

int binarySearch(int arr[] , int lo , int hi , int data)
{
    while(lo <= hi)
    {
      int mid = (lo + hi) / 2;

      if(arr[mid] == data)
      {
          return mid;
      }
      else if(arr[mid] > data)
      {
          hi = mid - 1;
      }
      else
      {
          lo = mid + 1;
      }

    }
    return -1;

}
int main()
{
    int arr[] = {1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14};
    int lo = 0;
    int data = 1;
    int hi = 1;

    while(arr[hi] < data)
    {
        hi *= 2;
    }

    int res = binarySearch(arr , lo , hi , data);

    printf("%d \n",res);
}

#include <stdio.h>

int firstIndex(int arr[] ,int lo , int hi, int key)
{
    int res = -1;
    while(lo <= hi)
    {
        int mid = (lo + hi) / 2;

        if(arr[mid] == key)
        {
            res = mid;
            hi = mid -1;
        }
        else if(arr[mid] > key)
        {
            hi = mid -1;
        }
        else
        {
            lo = mid + 1;
        }
    }

    return res;
}

int main()
{
    int arr[] = {0 , 0, 0, 0, 1, 1, 1,1 ,1 ,1};
    int lo = 0;
    int hi = 1;
    int key = 1;
    while(arr[hi] < key)
    {
        hi *= 2;
    }

    int res = firstIndex(arr , lo , hi , key);

    printf("%d",res);
}

#include <stdio.h>
int main()
{
    char string[100];
    printf("Enter Your Name.\n");
    gets(string);

    printf("Your Name is %s.\n",string);
}

//OUTPUT
//
//Enter Your Name.
//Manish Kumar
//Your Name is Manish Kumar.

#include <stdio.h>
int main()
{
    char string[100];
    printf("Enter a String.\n");
    gets(string);
    printf("Entered String is %s.\n",string);

    int length = 0;
    while(string[length] != '\0')
    {
        length++;

    }

      printf("Length of the String is %d.\n",length);
}

//OUTPUT
//
//Enter a String.
//Manish Kumar
//Entered String is Manish Kumar.
//Length of the String is 12.

#include <stdio.h>
int main()
{
    char string[100];
    printf("Enter a String.\n");
    gets(string);
    printf("Entered String is %s.\n",string);

//    logic

      for(int i = 0; string[i] != '\0'; i++)
      {
          if(string[i] >= 'A' && string[i] <= 'Z')
          {
              string[i] = (char)'a' + string[i] - 'A';
          }
      }

      printf("Transform String is %s.\n",string);
}

//OUTPUT

//Enter a String.
//Manish Kumar
//Entered String is Manish Kumar.
//Transform String is manish kumar.

#include <stdio.h>
int main()
{
    char string[100];
    printf("Enter a String.\n");
    gets(string);
    printf("Entered String is %s.\n",string);

//    logic

      for(int i = 0; string[i] != '\0'; i++)
      {
          if(string[i] >= 'a' && string[i] <= 'z')
          {
              string[i] = (char)'A' + string[i] - 'a';
          }
      }

      printf("Transform String is %s.\n",string);
}

//OUTPUT

//Enter a String.
//Mintu Kumar
//Entered String is Mintu Kumar.
//Transform String is MINTU KUMAR.

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#include <stdio.h>

int sum(int num1 , int num2) {
  return num1 + num2;
}

int main()
{
  int res = sum(2 , 4);
  printf("%d",res);
  res = sum(4 , 4);
  printf("%d",res);
}

#include <stdio.h>

void printTable(int tableNumber) {
    for(int i = 1; i <= 10; i++) {
        printf("%d x %d = %d\n" , tableNumber , i , tableNumber * i);
    }
}

int main()
{
    int tableNum;
    printf("Enter a Table-Number.\n");
    scanf("%d",&tableNum);

    printTable(tableNum);  // Called printTable function

    return 0;

}

// OUTPUT

// Enter a Table-Number.
// 10
// 10 x 1 = 10
// 10 x 2 = 20
// 10 x 3 = 30
// 10 x 4 = 40
// 10 x 5 = 50
// 10 x 6 = 60
// 10 x 7 = 70
// 10 x 8 = 80
// 10 x 9 = 90
// 10 x 10 = 100

#include <stdio.h>

char toUpperCase(char ch) {
  // It is check that the input character is lowerCase or not.. if Yes then execute if block code other-wise return without any changes
  if(ch >= 'a' && ch <= 'z') {
      return (ch - 32);  // Why substract 32...? Because The Difference Between ASCII Code of lowercase and
  // uppercase character is 32. (ex: ASCII Code of 'a' = 97 and ASCII Code of 'A' = 65).  97 - 65 = 32
  }

  return ch;
}

void main()
{
    char ch;
    printf("Enter a Character.\n");
    scanf("%c",&ch);

    char res = toUpperCase(ch);

    printf("%c is The UpperCase of %c", res , ch);
}

// OUTPUT
// Enter a Character.
// a
// A is The UpperCase of a

#include <stdio.h>

char toLowerCase(char ch) {
    if(ch >= 'A' && ch <= 'Z') {
        return (ch + 32); 
    }

    return ch;
}

void main()
{
    char ch;
    printf("Enter a Character.\n");
    scanf("%c",&ch);

    char res = toLowerCase(ch);

    printf("%c is the LowerCase of %c", res , ch);
}

// OUTPUT
// Enter a Character.
// a
// A is The UpperCase of a

#include <stdio.h> 

int toBinary(int num) {
    int x = 1;
    int res = 0;
    while(num > 0) {
        int temp = num % 2;
        num /= 2;
        res = res + temp * x;
        x *= 10;
    }

    return res;
}

void main()
{
    int num;
    printf("Enter a number\n");
    scanf("%d",&num);

    int res = toBinary(num);

    printf("Binary of %d is %d.\n",num , res);
}

// OUTPUT

// Enter a number
// 31
// Binary of 31 is 11111.

#include <stdio.h> 

int toOctal(int num) {
    int x = 1;
    int res = 0;
    while(num > 0) {
        int temp = num % 8;
        num /= 8;
        res = res + temp * x;
        x *= 10;
    }

    return res;
}

void main()
{
    int num;
    printf("Enter a number\n");
    scanf("%d",&num);

    int res = toOctal(num);

    printf("Octal Number of %d is %d.\n",num , res);
}

// OUTPUT

// Enter a number
// 15
// Octal Number of 15 is 17.

#include &ttstdio.h> 

int toHexaDecimal(int num) {
    int x = 1;
    int res = 0;
    while(num > 0) {
        int temp = num % 16;
        num /= 16;
        res = res + temp * x;
        x *= 10;
    }

    return res;
}

void main()
{
    int num;
    printf("Enter a number\n");
    scanf("%d",&num);

    int res = toHexaDecimal(num);

    printf("Hexa-Decimal Number of %d is %d.\n",num , res);
}

// OUTPUT

// Enter a number
// 150
// Hexa-Decimal Number of 150 is 96.

#include <stdio.h>

int toDecimal(int bNum) {
    int res = 0;
    int x = 1;

    while(bNum > 0) {
        int temp = bNum % 10;
        bNum /= 10;

        res += temp * x;
        x *= 2; 

    }

    return res;
}

void main()
{
    int bNum;
    printf("Enter a Binary Number.\n");
    scanf("%d",&bNum);

    int res = toDecimal(bNum);

    printf("Decimal of %d is %d\n",bNum , res);
}

// OUTPUT

// Enter a Binary Number.
// 1010
// Decimal of 1010 is 10

#include <stdio.h>
#include <stdbool.h>

bool isPrime(int num) {
    
    for(int i = 2; i <= num / 2; i++) {
        if(num % i == 0) {
            return false;
        }
    }

    return true;
}

void main()
{
    int num;
    printf("Enter a Number.\n");
    scanf("%d",&num);
    
    bool res = isPrime(num);

    if(res) {
        printf("%d is is Prime Number.\n",num);
    } else {
        printf("%d is Not Prime Number.\n",num);
    }
}

// OUTPUT

// Enter a Number.
// 15
// 15 is Not Prime Number.

#include <stdio.h>

int greaterAmongTwo(int num1 , int num2) {
    
    if(num1 > num2) {
        return num1;
    } else {
        return num2;
    }
}

void main()
{
    int num1 , num2;
    
    printf("Enter 1st number.\n");
    scanf("%d",&num1);

    printf("Enter 2nd number.\n");
    scanf("%d",&num2);

    int res = greaterAmongTwo(num1 , num2);

    printf("%d is Greater among %d and %d",res , num1 ,num2);

}

// OUTPUT

// Enter 1st number.
// 5
// Enter 2nd number.
// 6
// 6 is Greater among 5 and 6

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#3. WAP to Display Fibonacci Series of n Number.

#4. Write a Program to Reverse a Number and Stored in Another Variable.

#5. WAP To Check Whether Given Number is Palindrome or Not.

#6. WAP to Calculate the Count of Digits in a Number.

#7. WAP To Convert Decimal To Binary.

#8. WAP To Convert Binary To Decimal.

#9. Some Important Question is Added very Soon.

#1. WAP to Print Number From a Given Range.

#2. WAP to Print all Prime Number between 1 to 100.

#3. WAP to Print all Alphabet.

#4. WAP to Print Table of a Given Number.

#5. WAP

#6. WAP

#7. WAP

#8. WAP

#9. WAP

#10. WAP

#1. WAP Conversion Of Temperature From Celcius To Farenheit Scale And Vice Versa.

#2. WAP To Finding The Day.

#3. WAP To Make Calculator.

#4. WAP To Finding Grade Of A Given Marks Using Switch Case.

#5. WAP To Find Circumferance And Volume Of The Cylinder.

#6. WAP To Print Total Number Of Days In A Month Using Switch Case.

#7. WAP To Check Whether An Alphabet Is A Vowel Or Consonant.

#8. WAP To Find The Maximum Between Two Numbers Using Switch Case.

#9. WAP To Check whether A Number Is Even Or Odd Using Switch Case

#10. WAP To Check Whether The Number Is Positive,Negative Or Zero using Switch Case.

#1. WAP To Read and Display n Numbers Using an Array.

#2. WAP To Find The Mean Of n Numbers Using Array.

#3. WAP To Find the Largest Of n Numbers Using Array.

#4. WAP To Interchange The Largest And The Smallest Number In An Array.

#5. WAP To Find The Second Largest Number Using An Array Of n Numbers.

#6. WAP To Find Whether The Array Of Intergers Contain a Duplicate Number.

#7. WAP To Enter n Number of Digits. Form a Number Using These digits.

#8. WAP To Print The index Of the Smallest Number Of n Numbers Using Array.

#9. BinarySearch On Infite Length of an Array Or Unknown Length Array.

#10. WAP To Search First Index of 1 in 0 or 1 containing infinite array.

#1.WAP to Get String From The User.

#2. WAP To Find The Length Of a String.

#3. WAP To Convert The Characters Of a String into Lower Case.

#4. WAP To Convert The Character Of a String into Upper Case.

#5. WAP

#6. WAP

#7. WAP

#8. WAP

#9. WAP

#10. WAP

#1. WAP to Add two Numbers using Function.

#2. WAP To Print Table of a Given Number.

#3. WAP To Convert LowerCase Character into UpperCase Character.