[Error] no match for 'operator>>' (opera

2015-11-17 10:27:20 2.8k 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

[ROS2 Foxy] rclcpp_action “no match for ‘operator=’ (operand types are“ / 创建一个服务器收到目标之后反馈时的回调函数。ros2的版本从humble 换到了 foxy。阅读详情

#include<iostream>
#include <string>
#include <fstream>
using namespace std;

int main()
{
ofstream output;

output.open("number.txt");

output<<95<<" "<<56<<" "<<34;

output.close();

cout<<"Done"<<endl;

ofstream input;

input.open("number.txt");

int score1 ,score2 ,score3;

input >> score1;
input >> score2;
input >> score3;

cout<<"Total score is "<<score1+score2+score3<<endl;

input.close();

cout<<"Done"<<endl;

return 0;
}

25 8 F:\c++\Dev.cpp\SimpleFileinput.cpp [Error] no match for 'operator>>' (operand types are 'std::ofstream {aka std::basic_ofstream<char>}' and 'int')
求大神解答

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