Operators

An operator is a function that can be represented by a symbol, such as + and *.
Different operators may have different numbers of arguments
- Unary operators have 1 argument.
- Binary operators have 2 arguments.
- Ternary operators have 3 arguments.
The name of an operator consists of the keyword operator followed by the symbol for the operator.
The expression a + b is equivalent to operator+(a, b)
The following operators can be overloaded.
- Unary: +, -, *, &
- Arithmetic: +, -, *, /, %
- Equality: ==, !=
- Order: <, >, <=, >=
- Logical: &&, ||, !
- Bitwise: &, |, ~, ^
- Shift: <<, >>
- Assignment: =
- Compound assignment: +=, -=, *=, /=, %=, &=, |=, ^=, <<=, >>=
- Increment and decrement: ++, --
- Allocation: new, delete
- Miscellaneous: ,, ->*, ->, (), []
The following operators cannot be overloaded.
- ., .*, ::, ?:, sizeof

This page was last modified on Feb 1, 2001

URL: http://people.hsc.edu/faculty-staff/robbk/Coms262/Lectures/Operators.html