Tugas praktikum Algoritma & Pemrograman pertemuan 2

parking_system.cpp

#include <iostream>
#include <string>

int main() {
  std::cout << "=== PARKING MANAGEMENT SYSTEM ===" << std::endl;

  std::cout << "Vehicle types: " << std::endl;

  std::cout << "1. Motorcycle (Rp 2000/hour)" << std::endl;
  std::cout << "2. Car (Rp 5000/hour)" << std::endl;
  std::cout << "3. Truck (Rp 10000/hour)" << std::endl;

  int vehicle_type_input;
  std::cout << "choose vehicle type (1-3): ";
  std::cin >> vehicle_type_input;

  std::string vehicle_type;
  float base_rate; // harus pake float kak karena perhitungan diskon
  
  switch (vehicle_type_input) {
    case 1:
      vehicle_type = "motorcycle";
      base_rate = 2000;
      break;
    case 2:
      vehicle_type = "car";
      base_rate = 5000;
      break;
    case 3:
      vehicle_type = "truck";
      base_rate = 10000;
      break;
    default:
      std::cout << "unknown vehicle type" << std::endl;
      return 1;
      break;
  }

  int hours_parked;
  std::cout << "Parking duration (hours): " << std::endl;
  std::cin >> hours_parked;

  if (hours_parked > 24) {
    std::cout << "You cannot park more than 24 hours." << std::endl;
    return 1;
  }

  /* rules:
  * 2 jam pertama, charge 1x base_rate
  * 3 jam selanjutnya, charge 1.5x base_rate
  * 2 jam selanjutnya, charge 2x base_rate
  *
  * kepikiran pakai for loop, tapi kan ga boleh
  * subtotal += 2 * base_rate; ini juga ilegal
  */

  /** ngitung jam di setiap segmen
  * segmen pertama (2 jam pertama): ikutin hours_parked, kalau lebih dari 2 turunkan jadi 2 aja
  * segmen kedua (3 jam setelahnya): hours_parked - segmen pertama, kalau lebih dari 3 turunkan jadi 3 aja
  * segmen ketiga (sisa?): hours_parked - (segmen pertama + segmen kedua)
  */
  int first_seg_hour = hours_parked;
  if (hours_parked > 2) {
    first_seg_hour = 2; 
  }

  float first_subtotal = first_seg_hour * base_rate;
  float subtotal = first_subtotal;

  int second_seg_hour = hours_parked - first_seg_hour;
  if (second_seg_hour > 3) {
    second_seg_hour = 3;
  }

  float second_base_rate = 0;
  float second_subtotal = 0;

  if (hours_parked > 2) {
    second_base_rate = 1.5 * base_rate;

    second_subtotal = second_seg_hour *(second_base_rate);
    subtotal = subtotal + second_subtotal;
  }

  int third_seg_hour = hours_parked - (first_seg_hour + second_seg_hour);

  float third_base_rate = 0;
  float third_subtotal = 0;

  if (hours_parked > 3) {
    third_base_rate = 2 * base_rate;
    third_subtotal = third_seg_hour * third_base_rate;

    subtotal = subtotal + third_subtotal;
  }

  // input member
  char member_input;
  std::cout << "are you a member? (Y/N): ";
  std::cin >> member_input;

  if (member_input != 'Y' && member_input != 'N') {
    std::cout << "invalid answer" << std::endl;
    return 1;
  }

  bool is_member = member_input == 'Y';

  float total = subtotal; // kalau bukan member, total sama dgn subtotal karena tidak diskon
  float discount = 0;
  float member_discount = 0;
  
  if (is_member) {
    discount = 0.2; // 20% 
    member_discount = discount * subtotal;
    total = subtotal - member_discount;
  }

  std::cout << "\n=== PAYMENT DETAILS ===" << std::endl;
  std::cout << "vehicle type: " << vehicle_type << std::endl;
  std::cout << "Duration: " << hours_parked << std::endl;
  std::cout << "Base rate: " << base_rate << std::endl;

  std::cout << "Breakdown:" << std::endl;

  std::cout << "- Hours 1-2: " << first_seg_hour << " x Rp " << base_rate <<  "= Rp " << first_subtotal << std::endl;
  if(second_base_rate != 0) {
    std::cout << "- Hours 3-5: " << second_seg_hour << " x Rp " << second_base_rate << " = Rp " << second_subtotal <<  std::endl;
  }
  if(third_base_rate != 0) {
    std::cout << "- Hours 6-7: " << third_seg_hour << " = x Rp " << third_base_rate << " = Rp " << third_subtotal << std::endl;
  }

  std::cout << "Subtotal: " << subtotal << std::endl;
  if(discount != 0) std::cout << "Member discount: " << member_discount << std::endl;
  std::cout << "TOTAL: " << total << std::endl;
}