Pomodoro timer

main.cpp

#include <sstream>
#include <iostream>
#include "windows.h."
using namespace std;

struct timer {
  int minutes;
  int seconds;
  bool active;
  string s;
} pomo;

timer tick(timer t) {
  t.seconds -= 1;
  if (t.seconds < 0)
  {
    t.seconds = 59;
    t.minutes -= 1;
  }
  if (t.minutes == 0 && t.seconds == 0)
      t.active = false;

  stringstream ss;

  if (t.minutes > 0) ss << t.minutes << " minute";
  if (t.minutes > 1) ss << "s";
  if (t.minutes > 0) ss << " ";
  if (t.seconds != 0) ss << t.seconds << " second";
  if (t.seconds != 0 && t.seconds != 1) ss << "s";

  t.s = ss.str();

  return t;
}

bool check_choice(char c) {
    if (c == 'p' || c == 's' || c == 'l') return true;

    /*char valid [3] = { 'p', 's', 'l' };
    for (int i = 0; i < 2; ++i) {
        if (valid[i] == c) {
            return true;
        }
    }*/
    return false;
}

int main()
{
    cout << "Choose:" << endl;
    cout << "[P]omodoro   [S]hort Break   [L]ong Break" << endl;

    char choice;
    choice = '_';

    while (check_choice(choice) == false) {
        cin.get(choice);
        choice = tolower(choice);
    }

    if (choice == 'p') {
        pomo.minutes = 25;
    } else if (choice == 's') {
        pomo.minutes = 5;
    } else if (choice == 'l') {
        pomo.minutes = 10;
    }
    pomo.seconds = 1;
    tick(pomo);
    pomo.active = true;

    while (pomo.active) {
        if (pomo.seconds == 0 || pomo.seconds == 30) cout << endl << pomo.s;

        Sleep(1000); // This uses the Windows api
        pomo = tick(pomo);
    }

    cout << endl << "Timer end!\a";

    return 0;
}