Function Overloading - more detailed rules

Lecture 3 - Slide 8 : 27

Matching the type of an actual parameter and the type of a formal parameter

The call is ambiguous if two or more matches are found at the same level

The criateria below are tried in order

Exact match
- Only trivial conversions are performed
- Array name to pointer, function name to function pointer, T to const T,...
Match using promotions
- Integral promotions and floating point promotions
- bool to int, char to int, short to int, float to double, ...
Match using standard conversions
- int to double, double to int, double to long double, derived* to base*, T* to void*, int to unsigned int, ...
Match using user defined conversions
- Conversion operators and constructors
Match using the ellipsis ...
- Unspecified number of arguments