Write a program to enter a number and check number prime or, not?

// Write a program to enter a number and check number prime or, not? //

program :

#include<stdio.h>
#include<conio.h>
void main()
{
    int no,i,count=0;
    printf("\n Enter the value of no= ");
    scanf("%d",&no);
    for(i=1; i<=no; i++)
    {
        if(no%i==0)
        {
            count++;
        }
    }
    if(count==2)
    {
        printf("\n No is prime");
    }
    else
    {
        printf("\n No is not prime");
    }
    getch();
}

output :