#include <iostream>

#include <fstream>

#include <string>

int main() {

    //方式一

    std::ifstream ifile("file.txt");

    int a, b;

    while (ifile >> a >> b) {

        std::cout << a << "\t" << b << std::endl;

    }

    ifile.close();

    std::cout<<"--------------------------------"<<std::endl;

    //方式二

    ifile.open("file.txt");

    std::string line;

    while (std::getline(ifile, line)) {

        std::cout << line << std::endl;

    }

    ifile.close();

    return ;

}