C++ Assignment Operator Overloading
C++ Operator Overloading and Function Overloading
Just like other operators, you can overload the assignment operator ( = ) to create an object, such as a copy constructor.
The following example demonstrates how to overload the assignment operator.
Example
#include <iostream>
using namespace std;
class Distance
{
private:
int feet; // 0 to infinity
int inches; // 0 to 12
public:
// Required constructor
Distance(){
feet = 0;
inches = 0;
}
Distance(int f, int i){
feet = f;
inches = i;
}
void operator=(const Distance &D )
{
feet = D.feet;
inches = D.inches;
}
// Method to display distance
void displayDistance()
{
cout << "F: " << feet << " I:" << inches << endl;
}
};
int main()
{
Distance D1(11, 10), D2(5, 11);
cout << "First Distance : ";
D1.displayDistance();
cout << "Second Distance :";
D2.displayDistance();
// Using the assignment operator
D1 = D2;
cout << "First Distance :";
D1.displayDistance();
return 0;
}
When the above code is compiled and executed, it produces the following results:
First Distance : F: 11 I:10 Second Distance :F: 5 I:11 First Distance :F: 5 I:11other extensions