THINK++ — Engineering Visualized

Custom Logic

Operator Overloading

Allows you to redefine how standard operators (like +, -, <<) work with your custom classes.

SYNTAX

class Complex {
public:
    double r, i;
    Complex operator + (const Complex &obj) {
        return {r + obj.r, i + obj.i};
    }
};

Complex c3 = c1 + c2; // Calls the + operator

INTUITIVE

Makes user-defined types behave like built-in primitive types.

RESTRICTIONS

You cannot create NEW operators or change the precedence of existing ones.

MOST OVERLOADED

The assignment operator =, relational operators <, ==, and stream operators <<, >> are the most commonly overloaded.

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