To find prime numbers

Wednesday 3 July 2013

#include <stdio.h>

main()
{
    int i,j=2,k=0;
    clrscr();

    printf("\nENTER ANY NUMBER");
    scanf("%d",&i);

    while(j<=i/2)
    {
        if(i%j==0)
        {
            printf("%d IS NOT PRIME",i);
            k=1;
            break;
        }
        else
        {
            j++;
        }
    }
    if(k==0)
    {
        printf("%d IS PRIME",i);
    }
}