C ++如何读取目录中的所有.txt文件? [英] C++ How Do I Read All .txt Files in a Directory?

问题描述

如何读取特定目录中的所有.txt文件?假设在我的C:\中有一个foo.txt和foo2.txt.有没有一种方法可以阅读这两者，而不必做这样的事情?

How do I read all .txt files in a certain directory? Let's say in my C:\ I have a foo.txt and a foo2.txt. Is there a way to read both of these two without having to do something like this?

string text;
string text2;

ifstream myFile ("foo.txt");
ifstream myFile2 ("foo2.txt");

while(myFile << text){
};

while(myFile2 << text2){
};

换句话说，是否可以放置通配符*.txt来指示读取所有.txt文件?

In other words, is it possible to put a wildcard *.txt to instruct to read all .txt files?

ifstream myFile ("*.txt");

推荐答案

由于我看到您使用的是Windows，因此此处为FindFirstFile，FindNextFile.不需要Windows机器，所以我无法举个例子，但是这里有资源:

Since I see you are using windows here is a FindFirstFile, FindNextFile. Do not have Windows machine handy so I cannot give you example but here are the resources:

FindFirstFile FindNextFile

您可以提取ifstream的文件名.

You can than extract file name for ifstream.

或者您可以使用C ++ 17 目录迭代器.我根本没有玩过.

Or you can use C++17 directory iterator. I have not played with this at all.

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