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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.

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