10.Check prime number using for loop

 #include <stdio.h>

int main()

{

    int num, prime = 1;

    printf("Enter a number :");

    scanf("%d", &num);

    for (int i = 2; i < num; i++)

    {

        if (num % i == 0)

            prime = 0;

       

    }

    if (prime == 0)

    {

        printf("\n\nThis is not a prime number :");

    }

    else

    {

       printf("\n\nThis is Prime number :");

    }

    return 0;

}