如何从另一个成员函数调用成员函数指针？

typedef void (ClassName::*MemberFunctionPtr)();

MemberFunctionPtr ptr = &ClassName::functionName;

(this->*ptr)();

#include <iostream>

class MyClass {
public:
    typedef void (MyClass::*MemberFunctionPtr)();

    void function1() {
        std::cout << "Function 1" << std::endl;
    }

    void function2() {
        std::cout << "Function 2" << std::endl;
    }

    void callMemberFunction(MemberFunctionPtr ptr) {
        (this->*ptr)();
    }
};

int main() {
    MyClass obj;
    MyClass::MemberFunctionPtr ptr = &MyClass::function1;
    obj.callMemberFunction(ptr);  // Output: Function 1

    ptr = &MyClass::function2;
    obj.callMemberFunction(ptr);  // Output: Function 2

    return 0;
}