Program to check whether the given number is prime or not

#include<stdio.h>
#include<conio.h>
void main()
{
  int n, i, count=0;

  clrscr();
  printf("\nEnter a number: ");
  scanf("%d",&n);

  for(i=2;i<=n/2;i++)
  {
    if(n%i==0)
    {
      count++;
      break;
    }
  }

  if(count==0)
  {
     printf("%d is a prime number",n);
  }
  else
  {
     printf("%d is not a prime number",n);
  }
  getch();
}


OUTPUT:

Enter a number: 11
11 is a prime number

Enter a number: 25
25 is not a prime number