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

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