Question

Write a c program check whether a given number is a prime number if not then find whether it is a odd or even number......

Answer 1

Answer:

Explanation:

Example: Program to Check Prime Number

#include <stdio.h>

int main()

{

   int n, i, flag = 0;

   printf("Enter a positive integer: ");

   scanf("%d", &n);

   for(i = 2; i <= n/2; ++i)

   {

       // condition for nonprime number

       if(n%i == 0)

       {

           flag = 1;

           break;

       }

   }

   if (n == 1)  

   {

     printf("1 is neither a prime nor a composite number.");

   }

   else  

   {

       if (flag == 0)

         printf("%d is a prime number.", n);

       else

         printf("%d is not a prime number.", n);

   }

   

   return 0;

}

Output

Enter a positive integer: 29

29 is a prime number.

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