#include <iostream>
using namespace std;int strcm(const char *str3,const char *str4)
{
for(;*str3==*str4;str3++,str4++)
{
if(!*str3)
return 0;
}
return (*str3-*str4);
}int main(int,char**)
{
const char str1[] = "Hello";
const char str2[] = "Hello";
const char str3[] = "Hello world!";
const char str4[] = "hello";
cout<<strcm(str1,str2)<<endl;
cout<<strcm(str1,str3)<<endl;
cout<<strcm(str1,str4)<<endl;
cout<<'H'-'h'<<endl;
return 0;
}