Finding the GCD of Given two values

#include <stdio.h>
main()
 {   
  int n1, n2, i, gcd; 
    printf("Enter two integers: ");   
scanf("%d %d", &n1, &n2); 
    for(i=1; i <= n1 && i <= n2; ++i) 
   {     
     // Checks if i is factor of both integers     
    if(n1%i==0 && n2%i==0)         
   gcd = i;   
} 
    printf("G.C.D of %d and %d is %d", n1, n2, gcd);
}