Why ternary operator cannot be overloaded

The meaning of how an operator works on built-in data types cannot be changed by overloading. Operator overloading works only with objects of user-defined types i. There is no implicit overloading.

For operators other than those, overloaded operator functions can be member functions or standalone functions that are not part of a class.

When an operator function is implemented as a member, the leftmost operand must be a class object or a reference to a class object of the operator's class.

A standalone operator function is usually made a friend of the class to improve performance by avoiding the overhead of calls to accessor and mutator methods. For every pair of promoted arithmetic types L and R and for every type P, where P is a pointer, pointer-to-member, or scoped enumeration type, the following function signatures participate in the overload resolution performed in step 5 of the rules above:.

Many classes in the standard library overload operator to be used as function objects. The comma operator is not overloaded by any class in the standard library. The boost library uses operator, in boost. The database access library SOCI also overloads operator,. Operator precedence. Create account Log in. Namespaces Page Discussion.

Views View Edit History. From cppreference. Keywords Escape sequences. Namespace declaration. Namespace aliases. Fundamental types Enumeration types Function types. Compound types Union types. Default initialization Value initialization Zero initialization Copy initialization Direct initialization. Expressions Value categories Order of evaluation.

Operators Operator precedence. Class declaration Constructors this pointer. Access specifiers friend specifier. Class template Function template. Inline assembly. Run this code. The result of the conditional operator has the type and the value category of the other expression.

If the other expression is a bit field , the result is a bit field. The result is a prvalue of type void. An operand call it X of type TX can be converted to the target type of the other operand call it Y of type TY as follows:. If E2 and E3 do not have the same type, and either has possibly cv-qualified class type, overload resolution is performed using the built-in candidates below to attempt to convert the operands to built-in types.

If the overload resolution fails, the program is ill-formed. Otherwise, the selected conversions are applied and the converted operands are used in place of the original operands for step 6. LR operator? P operator? C documentation for Other operators. Category : Todo with reason. Compiler support. Freestanding and hosted. Language support library. Do you need your password? Submit your solution! When answering a question please: Read the question carefully.

Understand that English isn't everyone's first language so be lenient of bad spelling and grammar. If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome. Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question. Let's work to help developers, not make them feel stupid. Layout: fixed fluid.

Web01 2. Strip HTML. Encode HTML. Paste as-is.