I want to input a txt file through argv[1] in c++, however, I can't find a way to let the program successfully read the file I want, in fact, it didn't even read anything.

Can someone tell me how to let the program read the file? Do I execute it through the terminal? (I am using macOS), if yes then what should be the code for the terminal to run the program and read the right file. Please let me know if there is another way around. Thank you!

Here is my code

std::ifstream inFile(argv[1]);

if(!inFile.is_open()){

exit(EXIT_FAILURE);

}

inFile >> numRows >> numCols >> minVal >> maxVal;

inFile.close();

std::cout << numRows << std::endl;

std::cout << numCols << std::endl;

std::cout << minVal << std::endl;

std::cout << maxVal << std::endl;