c++Primer(第五版)3.2.1

<span style="font-family: Arial, Helvetica, sans-serif;">#include <iostream></span>

#include <string>
using namespace std;
int main()
{
	string line;
	while (getline(cin, line))
	{
		cout << line << endl;
	}
	system("pause");
	return 0;
}