#include <iostream>
#include <fstream> // debug
#include <string>
#include <thread>
#include <chrono>

int
main(int argc, char *argv[]) {

  std::ofstream log("childProgram.log");

  // Output for read test.
  if (argc == 2) {

    // Write a single line and exit.
    if (std::string(argv[1]) == "write") {
      log << "Command is \"write\".  Returning \"This is a test\"" << std::endl;
      std::cout << "This is a test";
      std::cout.flush();

      goto exit;

    }

    // Exit without writing anything.
    if (std::string(argv[1]) == "quit") {
      log << "Command is \"quit\".  Exiting" << std::endl;

      goto exit;

    }

  }

  char ch;
  log << "Received \"";
  while (std::cin >> ch) {

    // Exit?
    if ('q' == ch) {
      log << (char) ch << "\"" << std::endl;
      break;

    }

    std::cout << (char) std::toupper(ch);
    std::cout.flush();
    log << (char) ch;
    log.flush();

  }

 exit:
  log.close();
  return 25;

}