c++ - Grandparent overloaded function in child -

c++ - Grandparent overloaded function in child -

i need understand why c++ don't allow access grandparent overloaded functions in kid if of overloaded function declared in parent. consider next example:

class grandparent{ public: void foo(); void foo(int); void test(); }; class parent : public grandparent{ public: void foo(); }; class kid : public parent{ public: child(){ //foo(1); //not accessible test(); //accessible } };

here, 2 functions foo() , foo(int) overloaded functions in grandparent. foo(int) not accessible since foo() declared in parent (doesn't matter if declared public or private or protected). however, test() accessible, right per oop.

i need know reason of behavior.

the reason method hiding.

when declare method same name in derived class, base of operations class methods name hidden. total signature doesn't matter (i.e. cv-qualifiers or argument list).

if explicitly want allow call, can use

using grandparent::foo;

inside parent.

c++ overloading overriding