#include <iostream>
#include <string>
using namespace std;
int main()
{
string str1("un");
string str2("ko");
str1 += str2;
cout << "str1: " << str1 << endl;
if (str1 == "unko") {
cout << "一致" << endl;
} else {
cout << "不一致" << endl;
}
cout << "文字数は: " << str1.size() << endl;
return 0;
}