0
Composition Help - Fast Engine
You are creating a program to make Cars. Each Car has an Engine, which is declared as a separate class. Complete the given code to: 1. call the start() method of the Engine in the start() method of the Car, 2. create a Car object with the given Engine and inputs in main and call its start() method. My code (below) is incorrect, i call the engine start() function in main, which is not what the question wanted. All the various ways i tried to call the engine start() function in the start() method in Car class gave me errors.
10 Answers
+ 10
#include <iostream>
using namespace std;
class Engine {
public:
Engine(int p): power(p) {};
void start() {
cout <<"Engine ON ("<<power<<" horsepower)";
}
private:
int power;
};
class Car {
public:
Car(Engine x, string c, int y): e(x), color(c), year(y) {};
void start() {
cout <<"Starting"<<endl;
//your code goes here
}
private:
Engine e;
string color;
int year;
};
int main() {
int power;
string color;
int year;
cin >> power >> color >> year;
Engine e(power);
//your code goes here
Car carObject(power, color, year);
carObject.start();
Engine engObject(power);
engObject.start();
}
+ 3
#include <iostream>
using namespace std;
class Engine {
public:
Engine(int p): power(p) {};
void start() {
cout <<"Engine ON ("<<power<<" horsepower)";
}
private:
int power;
};
class Car {
public:
Car(Engine x, string c, int y): e(x), color(c), year(y) {};
void start() {
cout <<"Starting"<<endl;
//your code goes here
e.start();
}
private:
Engine e;
string color;
int year;
};
int main() {
int power;
string color;
int year;
cin >> power >> color >> year;
Engine e(power);
//your code goes here
Car car(power, color, year);
car.start();
}
+ 2
Just call e.start() inside Car::start, you are supposed to use the private `Engine` instance <e>.
And remove these
Engine e(power);
Engine engObject(power);
engObject.start();
from main function.
+ 2
// TITLE: composition.cpp
#include<bits/stdc++.h>
#include <iostream>
using namespace std;
typedef long long ll;
typedef long double ld;
/*ENGINE CLASS*/
class Engine {
private:
int power;
public:
Engine(int p): power(p) {};
void start() {
cout <<"Engine ON ("<<power<<" horsepower)";
}
};
/*CAR CLASS*/
class Car {
private:
Engine eng;
string color;
int year;
public:
Car(Engine x, string c, int y): eng(x), color(c), year(y) {};
void start() {
cout <<"Starting"<<endl;
//your code goes here
//eng.start();
}
};
/*SOLVE FUNCTION*/
void solve(){
std::vector<char> v;
}
/*main.cpp*/
int main()
{
ios::sync_with_stdio(0);
int power;
string color;
int year;
cin >> power >> color >> year;
Engine e(power);
//your code goes here
Car c1(power,color,year);
c1.start();
Engine eng(power);
eng.start();
return 0;
}
/*
Input
142
black
2017
Expected Output
Starting
Engine ON (142 horsepower)
*/
+ 1
Привет, Денис! Взял твой код за основу, пятый пункт не проходит, не подскажешь какое условие в пятом пункте теста.
+ 1
#include <iostream>
using namespace std;
class Engine {
public:
Engine(int p): power(p) {};
void start() {
cout <<"Engine ON ("<<power<<" horsepower)";
}
private:
int power;
};
class Car {
public:
Car(Engine x, string c, int y): e(x), color(c), year(y) {};
void start() {
cout <<"Starting"<<endl;
//your code goes here
}
private:
Engine e;
string color;
int year;
};
int main() {
int power;
string color;
int year;
cin >> power >> color >> year;
Engine e(power);
//your code goes here
Car carObject(power, color, year);
carObject.start();
Engine engObject(power);
engObject.start();
}
Good Luck
+ 1
Thank you very much, I really got stuck with it) 🙏
0
#include <iostream>
using namespace std;
class Engine {
public:
Engine(int p): power(p) {};
void start() {
cout <<"Engine ON ("<<power<<" horsepower)";
}
private:
int power;
};
class Car {
public:
Car(Engine x, string c, int y): e(x), color(c), year(y) {};
void start() {
cout <<"Starting"<<endl;
//your code goes here
e.start();
}
private:
Engine e;
string color;
int year;
};
int main() {
int power;
string color;
int year;
cin >> power >> color >> year;
Engine e(power);
//your code goes here
Car car(e,color,year);
car.start();
Engine eng(power);
}
0
#include <iostream>
using namespace std;
class Engine {
public:
Engine(int p): power(p) {};
void start() {
cout <<"Engine ON ("<> power >> color >> year;
Engine e(power);
//your code goes here
Car car(e,color,year);
car.start();
Engine eng(power);
}
0
Composition Help - Fast Engine
You are creating a program to make Cars. Each Car has an Engine, which is declared as a separate class.
Complete the given code to:
1. call the start() method of the Engine in the start() method of the Car,
2. create a Car object with the given Engine and inputs in main and call its start() method.
how to solve this problem please tell me