Prime number Program

primeno-2.c

#include<stdio.h>

int main()
{
    int n, i = 2, half, isPrime = 1;
    
    printf("Enter Value of n... ");
    scanf("%d", &n);

    half = n / 2;
    if(n > 1)
    {
        for(i = 2 ; i <= half ; i++)
        {
            if(n % i == 0)
            {
                isPrime = 0;
                break;  
            }
        }
    }
    else
        isPrime = 0;

    if(isPrime)
        printf("%d is a Prime Number.", n);
    else
        printf("%d is not a Prime Number.", n);
    return 0;
}