Go4Expert - problem with prime no's

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problem with prime no's

i want to print prime no's between 2 and 200,
in te code i've written, it is also printing 127 which is not prime, don't know why because the variable c should be greater than 2 for 127

Code: c

#include<conio.h>
#include<stdio.h>
#include<math.h>
int main()
{
int c,i,num;
clrscr();
for (num=2;num<=200;num++)
{
 c=0;
 for(i=1;i<=num;i++)
 {
 if(num%i==0) c=c+1;        //checking if num is divisible by i
 }
 if(c==2)            //for prime no's c will be 2
 printf("%d ",num);    //num is div by 1 and num itself
}
getch();
return 0;
}