如何在 C++ 中打开 .txt 文件？
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How do I open a .txt file in C++?
提问by user2464737
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main () {
string line;
ifstream myfile("hey.txt");
myfile >> line;
cout << line;
system("pause");
return 0;
}
Why does this not print out what is in my "hey.txt" file?
为什么这不打印出我的“hey.txt”文件中的内容？
回答by varun
This should do the job, If you are new to these things please read http://www.cplusplus.com/doc/tutorial/files/
这应该可以完成工作，如果您不熟悉这些东西，请阅读http://www.cplusplus.com/doc/tutorial/files/
EDIT: in article above .good() is a bad practice, look here if you need to more detail Testing stream.good() or !stream.eof() reads last line twice
编辑：在上面的文章中 .good() 是一种不好的做法，如果您需要更多详细信息，请看这里测试 stream.good() 或 !stream.eof() 读取最后一行两次
// reading a text file
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main () {
string line;
ifstream myfile ("example.txt");
if (myfile.is_open())
{
while(getline(myfile, line)) {
cout << line << endl;
}
myfile.close();
}
else cout << "Unable to open file";
return 0;
}
