Operator Overloading

Imagine we wanted to add member functions to our class

complex to increment/decrement the real and imaginary parts:

class complex {

private:

float real_p, imag_p;

public:

// constructor

complex(float r = 0.0, float i = 0.0) { real_p=r; imag_p=i; }

// We’re giving these member functions strange names, but

// the reason will soon be clear...

operator++() { real_p += 1.0; imag_p += 1.0; }

operator--() { real_p -= 1.0; imag_p -= 1.0; }

};

complex a(5.5, -17.3);

complex b(6.2);

a.operator++();

b.operator--();

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