C program to determine a number is prime or not.

            C program to determine a number is prime or not.



#include<stdio.h>
#include<conio.h>
void main( )
{
  int n, i , s=1;
  clrscr( );
   printf("Enter any number ");
   scanf("%d",&n);
    i=2;
    while(i<=n/2 && s==1 )
     {
      if( n%i==0 )
      {
        s=0;
         }
          else 
         {
      i=i+1;
       }
    if( s==1 )
    {
     printf("Number is Prime Number ");
     }
   else
   {
 printf("Number is Not Prime Number ");
  }
  getch( );
 }