程序代码：

#include<iostream>
#include<string>
#include<utility>
typedef pair<string,string> Author;
using namespace std;
int main ()
{
    string firstBook;
    Author proust("Marcel", "Proust");
    Author joyce("James", "joyce");
    if (Author.first == "James" && Athor.sencond == "Joyce")
        firstBook = "Stephen Hero" ;
    cout << << "The firstBook is " << firstBook << endl;
    system("pause");
}

#pragma warning(disable:4786)