Address of Overloaded Functions
Use of a function name without arguments returns the address of that function. For example:
int Func( int i, int j ); int Func( long l ); ... int (*pFunc) ( int, int ) = Func;
In the preceding example, the first version of Func is selected, and its address is copied into pFunc.
The compiler determines which version of the function to select by finding a function with an argument list that exactly matches that of the target. The arguments in the overloaded function declarations are matched against one of the following:
An object being initialized (as shown in the preceding example)
The left side of an assignment statement
A formal argument to a function
A formal argument to a user-defined operator
A function return type
If no exact match is found, the expression that takes the address of the function is ambiguous and an error is generated.
Note that although a nonmember function, Func, was used in the preceding example, the same rules are applied when taking the address of overloaded member functions.