CPSC 120 Read a line of text from cin and then write the line out to a file

cpsc120_write_message.cc

// Gist https://gist.github.com/30ad98e4ca6f0aa45db9e9a31c5625af
// Filename cpsc120_write_message.cc
// CompileCommand clang++ -std=c++17 cpsc120_write_message.cc
// Read a line of text from cin and then write the line out to a file

#include <fstream>
#include <iostream>
#include <string>
#include <vector>

int main(int argc, char const *argv[]) {
  std::vector<std::string> args{argv, argv + argc};
  if (args.size() < 2) {
    std::cout << "Please provide a path to a file.\n";
    return 1;
  }
  std::string output_file_name{args.at(1)};
  std::ofstream output_file_stream{output_file_name};
  if (!output_file_stream.is_open()) {
    std::cout << "Could not open the file " << output_file_name << "\n";
    return 1;
  }

  std::string message;

  std::cout
      << "Type your message out and when you're done press return or enter.\n";

  std::getline(std::cin, message, '\n');

  output_file_stream << message << "\n";

  if (output_file_stream.bad()) {
    std::cout << "I/O error\n";
    return 1;
  } else if (output_file_stream.fail()) {
    std::cout << "Encountered something crazy! Long line?\n";
    return 1;
  }

  std::cout << "Your message was saved into " << output_file_name << ".\n";

  // When you open something, close it!
  // This is a very important habit to develop.
  output_file_stream.close();
  return 0;
}