blog-file-name-loop

file-name-loop.cpp

for (const auto &file_name : program_options::input_files()) {
    std::ifstream input_file(file_name, std::ios::in);
    
    // ...

    while (std::getline(input_file, line)) {
        if (program_options::show_line_numbers())
            std::cout << std::setw(6) << std::setfill(' ') << line_count++ << "  ";

        // ...

        if (program_options::show_ends())
            std::cout << '$';

        // ...
    }
}