CopyConstructor.cpp

//CopyConstructor
 #include<iostream>
using namespace std;
class code{
    int id;
    public:
    code(){}
    code(int a){id=a;}
    code(code &x){
        id=x.id;
    }
    void display(void){
        cout<<id;
    }
};
int main(){
    code A(100);
    code B(A);
    code C=A;
    code D;
    D=A;
    cout<<"Id of A:";
    A.display();
    cout<<"   Id of B:";
    B.display();
    cout<<"   Id of C:";
    C.display();
    cout<<"   Id of D:";
    D.display();
    return 0;
}