#include <iostream>
using namespace std;

int strcmp2 (const char *s1, const char *s2)
{
    // ADD CODE HERE
};

int main()
{
    char s1[20] = "first";
    char s2[20] = "second";
    char s3[20] = "first";
    char s4[20] = "firs2";
    cout << strcmp (s1, s2) << endl;
    cout << strcmp (s2, s1) << endl;
    cout << strcmp (s1, s3) << endl;
    cout << strcmp (s1, s4) << endl;
    /*cout << strcmp2 (s1, s2) << endl;
    cout << strcmp2 (s2, s1) << endl;
    cout << strcmp2 (s1, s3) << endl;
    cout << strcmp2 (s1, s4) << endl;*/
    return 0;
}