Question

Given main(), complete the Car class (in files Car.h and Car.cpp) with member functions to set and get the purchase price of a car (SetPurchasePrice(), GetPurchasePrice()), and to output the car's information (PrintInfo()).

Ex: If the input is:

2011
18000
2018

where 2011 is the car's model year, 18000 is the purchase price, and 2018 is the current year, the output is:

Car's information:
   Model year: 2011
   Purchase price: 18000
   Current value: 5770

Note: printInfo() should use three spaces for indentation.

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given starting code:

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Main.cpp

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

int main(int argc, const char* argv[]) {
int userYear;
int userPrice;
int userCurrentYear;
Car myCar;
  
cin >> userYear;
cin >> userPrice;
cin >> userCurrentYear;
  
myCar.SetModelYear(userYear);
myCar.SetPurchasePrice(userPrice);
myCar.CalcCurrentValue(userCurrentYear);
  
myCar.PrintInfo();

return 0;
}

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Car.cpp

#include <iostream>
#include <math.h>
#include "Car.h"
using namespace std;

void Car::SetModelYear(int userYear){
modelYear = userYear;
}

int Car::GetModelYear() const {
return modelYear;
}

// TODO: Implement SetPurchasePrice() function

// TODO: Implement GetPurchasePrice() function

void Car::CalcCurrentValue(int currentYear) {
double depreciationRate = 0.15;
int carAge = currentYear - modelYear;
  
// Car depreciation formula
currentValue = (int)
round(purchasePrice * pow((1 - depreciationRate), carAge));
}

// TODO: Implement PrintInfo() function to output modelYear, purchasePrice, and
// currentValue

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Car.h

#ifndef CARH
#define CARH

class Car {
private:
int modelYear;
// TODO: Declare purchasePrice member (int)
int currentValue;

public:
void SetModelYear(int userYear);

int GetModelYear() const;

// TODO: Declare SetPurchasePrice() function

// TODO: Declare GetPurchasePrice() function

void CalcCurrentValue(int currentYear);

// TODO: Declare PrintInfo() method to output modelYear, purchasePrice, and
// currentValue

};

#endif

Answer 1

// Please comment below, if you have any doubt

// If the answer is helpful, please give a like :-)

//********************************************************************************

1) Main.cpp

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

int main(int argc, const char* argv[]) {
int userYear;
int userPrice;
int userCurrentYear;
Car myCar;
  
cin >> userYear;
cin >> userPrice;
cin >> userCurrentYear;
  
myCar.SetModelYear(userYear);
myCar.SetPurchasePrice(userPrice);
myCar.CalcCurrentValue(userCurrentYear);
  
myCar.PrintInfo();

return 0;
}

// ********************************************************************************

2) Car.cpp

#include <iostream>
#include <math.h>
#include "Car.h"
using namespace std;

void Car::SetModelYear(int userYear){
modelYear = userYear;
}

int Car::GetModelYear() const{
return modelYear;
}

void Car::SetPurchasePrice(int boughtPrice){
purchasePrice = boughtPrice;
}

int Car::GetPurchasePrice() const{
return purchasePrice;
}

void Car::CalcCurrentValue(int currentYear) {
double depreciationRate = 0.15;
int carAge = currentYear - modelYear;
// Car depreciation formula
currentValue = (int)round(purchasePrice * pow((1 - depreciationRate), carAge));
}

Car::PrintInfo() const{
cout << "Car's information:" << endl;
cout << " Model year: " << modelYear <<endl;
cout << " Purchase price: " << purchasePrice <<endl;
cout << " Current value: " << currentValue <<endl;
}

//*********************************************************************

3) Car.h

#ifndef CARH
#define CARH

class Car {
private:
int modelYear;
int purchasePrice;
int currentValue;

public:
void SetModelYear(int userYear);

int GetModelYear() const;

void SetPurchasePrice(int boughtPrice);

int GetPurchasePrice() const;

void CalcCurrentValue(int currentYear);

void PrintInfo() const;

};

#endif