2012-09-26 02:45:31.560 nn[731:303] Which numbers do you want to calculate Great Common Divisor?

 1st=

4

2012-09-26 02:45:36.777 nn[731:303] 2nd=

6

2012-09-26 02:45:39.633 nn[731:303] your number is 45 and 66, and gcd is 3

#import <Foundation/Foundation.h>

int main (int argc, char *argv[]){
@autoreleasepool{
    int n1, n2;
    int numerator, denominator, remainder, gcd;
    numerator = 0;
    denominator = 0;
    remainder = 0;
    gcd = 0;

    NSLog(@"Which numbers do you want to calculate Great Common Divisor? n 1st=");
    scanf("%i", &n1);
    NSLog(@"2nd=");
    scanf("%i", &n2);

    numerator = n1;
    denominator = n2;

    while (numerator % denominator != 0){
        remainder = numerator % denominator;
        numerator = denominator;
        denominator = remainder;
    }

    gcd = denominator;
    NSLog(@"your number is %i and %i, and gcd is %i", n1, n2, gcd);
}
return 0;
}