C++每日一练1.按行读取文件并打印

Posted 2022-01-06 鱼酱2333

需求：按行读取文件并打印

#include <string>
#include <fstream>
#include <iostream>
using namespace std;
int main(int argc,char **argv)

    string query;
    std::ifstream in("1.txt");
    while(getline(in,query))
        cout<<query.size()<<query<<endl;
    
    return 0;