C Program to check whether a given number is prime number

Problem 53. C Program to check whether a given number is prime number.
#include<stdio.h>
#include<conio.h>
main( )
{
int i,n,c=0;
clrscr( );
printf(“enter a number”);
scanf(“%d”,&n);
for(i=0;i<=n;i++)
if(n%i==0)
c++;
if(c==2)
printf(“given number is a prime number”);
else
printf(“given number is not prime number”);
getch( );
}
C compiler: gcc 4.1.2

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