C++写文件

头文件

ofstream -- 向文件写内容

实现代码

#include <vector> 
#include <string> 
#include <fstream> 
#include <iostream> 

using std::ofstream;

void CMFCyaraguiDlg::C2ToYaraText(vector<string> result)
{
	ofstream outfile;   //输出流
        int cost[10][10];

        outfile.open("G:\C++ project\Read\result.txt", ios::app);   //每次写都定位的文件结尾，不会丢失原来的内容，用out则会丢失原来的内容
        if(!outfile.is_open ())
        {    cout << "Open file failure" << endl; }
        for (int i = 0; i != 10; ++i)
        {
            for (int j = 0; j != 10; ++j)
            {
                outfile << i << "	" << j << "	" << cost[i][j] << endl;  //在result.txt中写入结果
            }

        }
       outfile.close();

}

参考

C++读写TXT文件中的string或者int型数据以及string流的用法
https://www.cnblogs.com/1242118789lr/p/6885691.html