c 2b 2b over load operator

1// money.h -- define the prototype
2class Money
3{
4   public:
5      Money & operator += (const Money &rhs);
6}
7
8// money.cpp -- define the implementation
9Money& Money :: operator += (const Money &rhs)
10{
11   // Yadda Yadda
12  
13   return *this;
14}

1// This will substract one vector (math vector) from another
2// Good example of how to use operator overloading
3
4vec2 operator - (vec2 const &other) {
5    return vec2(x - other.x, y - other.y);
6}

1class Point
2{
3public:
4	Point& operator++() { ... }		// prefix
5	Point operator++(int) { ... }	// postfix
6  	friend Point& operator++(Point &p);			// friend prefix
7  	friend Point operator++(Point &p, int);		// friend postfix
8  	// in Microsoft Docs written "friend Point& operator++(Point &p, int);"
9};
10