Car Class in C++ Using Inheritance

Create a car class that includes name as its data member. Create another class Toyota that is derived from class and includes his model # (int type) and color (string type) as his data member. Write appropriate constructors (multiple constructors) and display method to create and display objects of Toyota class.

#include<iostream>
#include<conio.h>
#include<string.h>
using namespace std;
class car {
     protected:
          string name;
     public:
          car(){         
              name=" ";
          }
};
class toyota : public car {
     private:
          string color;
          int model;
     public:
          toyota(){      
              name="NULL";
              color="NULL";
              model=0; 
          }
          toyota(int){        
              name=" ";
              color=" ";
              model=0;
          }

          void display(){          
              name="Toyota Corolla";
              color="Grey";
              model=2017;
              cout<<"Name of car:"<<name<<endl<<"Model of Car:"<<model<<endl<<"Colour of the car:"<<color;
          }
};
int main(){
     toyota t1;
     t1.display();
     getch();
     return 0;

}