1. #include <iostream>
2. #include <vector>
3. using namespace std;
4.  
5. class Car
6. {
7.     public:
8.     string color;
9.     int horsepower;
10.     int numberseats;
11.     public:
12.        virtual void Brumbrum(){
13.        }
14.  
15.         friend ostream& operator <<(ostream&, const Car&);
16. };
17.  
18. class Racecar :public Car
19. {
20.     public:
21.     float nitro;
22.     public:
23.        Racecar(int hp, int ns, string c)
24.         {
25.             horsepower=hp;
26.             numberseats=ns;
27.             color=c;
28.             nitro=9.4;
29.         }
30.         void Brumbrum()
31.         {
32.             cout<<"dzwiek Brumbrum \n";
33.         }
34.         friend ostream& operator <<(ostream&, const Racecar&);
35. };
36.  
37. class Truck :public Car
38. {
39.     public:
40.         string trailer;
41.  
42.     public:
43.         Truck(int hp, int ns, string c)
44.         {
45.             horsepower=hp;
46.             numberseats=ns;
47.             color=c;
48.             trailer="Temared";
49.         }
50.     void Brumbrum()
51.     {
52.         cout<<"dzwiek Wrrrrr\n";
53.     }
54.     friend ostream& operator <<(ostream&, const Truck&);
55. };
56.  
57. ostream& operator<<(ostream& os, const Car& cc)
58. {
59.     os << "kolor "<< cc.color << " " << cc.horsepower << " koni "<< cc.numberseats <<" miejsca "<<endl;
60.     return os;
61. }
62. ostream& operator<<(ostream& os, const Racecar& rc)
63. {
64.     os<< ""<<rc.nitro<<" l.pojemnosci nitro"<<endl;
65.     return os;
66. }
67.  
68. ostream& operator<<(ostream& os, const Truck& tt)
69. {
70.     os<< "przyczepa firmy " <<tt.trailer <<""<<endl;
71.     return os;
72. }
73.  
74.  
75. int main()
76. {
77.  
78.  
79.     vector < Car > c1;
80.     vector < Racecar > r1;
81.     vector < Truck > t1;
82.     c1.emplace_back(Racecar(700,2,"czerwony"));
83.     c1.emplace_back(Truck(400,2,"zielony"));
84.     t1.emplace_back(350,1,"bialy");
85.     r1.emplace_back(500,3,"czarny");
86.  
87.  
88.     for( int i = 0; i < c1.size(); i++ )
89.     {
90.         cout<<c1[i]<<endl;
91.         if (i==0)
92.         {
93.         cout<<r1[i]<<endl;
94.         r1[i].Brumbrum();
95.         }
96.  
97.     }
98.  
99.     for(int j = 0; j<c1.size(); j++)
100.     {
101.         if(j==0)
102.         {
103.             cout<<t1[j]<<endl;
104.             t1[j].Brumbrum();
105.         }
106.  
107.     }
108.  
109.     return 0;
110. }
111.