c++读取文件

Posted 2020-08-05 Ren.Yu

 1 #include <iostream>
 2 #include <string>
 3 #include <fstream>
 4 
 5 int main() {
 6     std::ifstream in_file("test.txt");
 7     std::string line;
 8     while ( getline(in_file, line) ) {
 9         std::cout << line;
10     }
11 }

不需要检查test.txt是否存在