bs.cpp

/* Joseph Mora
   CS65
   18Mar18*/

#include <stdio.h>
#include <iostream>
#include <iomanip>

using namespace std;
//void has no expectation of a return value
void standardConvert(int hour, int min, int AM_PM){
  //setting width of integers and padding with 0's if it needs to be filled
  if ((AM_PM == 2) && (hour == 12)){
    cout << "Military Time: " << hour << setfill('0') << setw(2) << min << endl;
  }
  else if((AM_PM == 1) && (hour == 12)){
    if (min == 0){
      hour = 0;
      cout << "Military Time: " << setfill('0') << setw(4) << hour << endl;
    }
    else{
      hour = 0;
      cout << "Military Time: " << setfill('0') << setw(2) << hour << setfill('0') << setw(2) << min << endl;
    }
  }
  else if((AM_PM == 1) && (hour < 10)){
    cout << "Military Time: " << setfill('0') << setw(2) << hour << setfill('0') << setw(2) << min << endl;
  }
  else if(((AM_PM == 1) && (hour >= 10) && (hour < 12))){
    cout << "Military Time: " << hour << min << endl;
  }
  else {
    hour += 12;
    cout << "Military Time: " << hour << min << endl;
  }
}

void militaryConvert(int hour, int min){

  if(hour == 0){
    hour +=12;
    cout << "Standard Time: " << hour << ":" << setfill('0') << setw(2) << min <<  " AM" << endl;
  }
  else if(hour == 12){
    cout << "Standard Time: " << hour << ":" << setfill('0') << setw(2) << min << " PM" << endl;
  }
  else if(hour > 12){
    hour -= 12;
    cout << "Standard Time: " << hour << ":" << setfill('0') << setw(2) << min << " PM" << endl;
  }
  else {
    cout << "Standard Time: " << hour << ":" << setfill('0') << setw(2) << min << " AM" << endl;
  }
}

int main(){

  int min;
  int hour;
  int AM_PM;
  int input;
  bool done = false;

  while(!done){
    cout << "====================Main Menu===================" << endl;
  	cout << "1. Convert from Standard to Military time format." << endl;
    cout << "2. Convert from Military to Standard time format." << endl;
    cout << "3. Exit program." << endl;
    cin >> input;

    switch (input){
      case 1:
        cout << "time(hour): ";
        cin >> hour;
        cout << "time(min): ";
        cin >> min;

        if(hour <= 12){
          cout << "(1) Type 1 for AM" << endl;
          cout << "(2) Type 2 for PM" << endl;
          cin >> AM_PM;
          if (AM_PM == 1){
            cout << "You entered " << hour << ":" << setfill('0') << setw(2) << min << " AM" << endl;
          }
          else{
            cout << "You entered " << hour << ":" << setfill('0') << setw(2) << min << " PM" << endl;
          }
          standardConvert(hour, min, AM_PM);
        }
        break;
      case 2:
        cout << "time(hour): ";
        cin >> hour;
        cout << "time(min): ";
        cin >> min;
        militaryConvert(hour, min);
        break;

      case 3:
        return 1;
    }
  }
}