For putting data into the stream and getting data from the stream, the stream insertion and extraction operators are used, Now these operators are already defined for defined datatypes in C++, but for our self-defined datatypes we need to overload these two operators, the code is:

    //overloading stream insertion and extraction operators in C++
    #include<iostream>
    using namespace std;
    class point{
    private:
        int x,y;
     
    public:
        point()
        {
            x =0;
            y = 0;
        
        }
        friend ostream&operator<< (ostream& cin, point& z){
        
            cin<<z.x<<"  "<<z.y<<endl;
            return cin;
        }    
     
        friend istream&operator>>(istream& a, point& z)
        {
        
            a>>z.x;
            a>>z.y;
            return a;
        }
     
    };
     
    int main(){
     
        point n;
     
        cin>>n;
     
        cout<<n;
    } 

In the above code, the steam insertion and extraction operators are overloaded in the overload functions of “<<” and “>>”