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Lesson 6
Objective
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The operator keyword Use the operator keyword to overload operators. |
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To overload operators, you use the operator keyword similarly to how you used it to overload functions. For example:
class foo {
public:
foo operator-(); //overload unary minus
foo operator-(int); //binary minus foo-int
foo operator-(foo); //binary minus foo-foo
};
foo operator-(int, foo); //binary minus int-foo
foo operator-(int, foo*); //illegal:need foo or foo&
Notice that it is our style to omit spaces between the keyword operator, the operator to be overloaded, and the
signature.
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