You can overload the assignment operator (=) just as you can other operators and it can be used to create an object just like the copy constructor.
Following example explain how an assignment operator can be overloaded.
#include <iostream> using namespace std; class Distance { private: int feet; // 0 to infinite int inches; // 0 to 12 public: // required constructors 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(); // use assignment operator D1 = D2; cout << "First Distance :"; D1.displayDistance(); return 0; }
When the above code is compiled and executed, it produces following result:
First Distance : F: 11 I:10 Second Distance :F: 5 I:11 First Distance :F: 5 I:11
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