Binary Operators
The following table shows a list of operators that can be overloaded.
|
Operator |
Name |
|---|---|
|
, |
Comma |
|
!= |
Inequality |
|
% |
Modulus |
|
%= |
Modulus/assignment |
|
& |
Bitwise AND |
|
&& |
Logical AND |
|
&= |
Bitwise AND/assignment |
|
* |
Multiplication |
|
*= |
Multiplication/assignment |
|
+ |
Addition |
|
+= |
Addition/assignment |
|
– |
Subtraction |
|
–= |
Subtraction/assignment |
|
–> |
Member selection |
|
–>* |
Pointer-to-member selection |
|
/ |
Division |
|
/= |
Division/assignment |
|
< |
Less than |
|
<< |
Left shift |
|
<<= |
Left shift/assignment |
|
<= |
Less than or equal to |
|
= |
Assignment |
|
== |
Equality |
|
> |
Greater than |
|
>= |
Greater than or equal to |
|
>> |
Right shift |
|
>>= |
Right shift/assignment |
|
^ |
Exclusive OR |
|
^= |
Exclusive OR/assignment |
|
| |
Bitwise inclusive OR |
|
|= |
Bitwise inclusive OR/assignment |
|
|| |
Logical OR |
To declare a binary operator function as a nonstatic member, you must declare it in the form:
ret-type operatorop( arg )
where ret-type is the return type, op is one of the operators listed in the preceding table, and arg is an argument of any type.
To declare a binary operator function as a global function, you must declare it in the form:
ret-type operatorop( arg1, arg2 )
where ret-type and op are as described for member operator functions and arg1 and arg2 are arguments. At least one of the arguments must be of class type.
Note
|
|---|
|
There is no restriction on the return types of the binary operators; however, most user-defined binary operators return either a class type or a reference to a class type. |
