C++ : Read a file name from the command line and utilize it in my file

Question

如何从命令行读取文件名并在我的 C++ 代码文件中使用它？

例如:./cppfile inputFilename outputFilename

非常感谢任何帮助!

Answer 1

int main(int argc, char** argv) {
    string inFile = "";
    string outFile = "";
    if( argc == 3 ) {
      inFile = argv[1];
      outFile = argv[2];
    }
    else {
      cout << "Usage: ./cppfile InputFile OutputFile\n";
      return 1;
    }
    ...
}