#include<iostream>
写文件
ofstream
追加模式
写文件
ifstream
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#include <fstream>
fstream output;
output.open("file.txt", ios::app);
output << state_.mprset_.size() << endl;
output.close();
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标签：文件,ifstream,fstream,读写,ios,output,include
来源： https://www.cnblogs.com/libxing/p/16641007.html