c++ - How to call through a member function pointer?

Question

I'm trying to do some testing with member function pointer. What is wrong with this code? The bigCat.*pcat(); statement doesn't compile.

class cat {
public:
   void walk() {
      printf("cat is walking 
");
   }
};

int main(){
   cat bigCat;
   void (cat::*pcat)();
   pcat = &cat::walk;
   bigCat.*pcat();
}

question from:https://stackoverflow.com/questions/66050416/must-use-or-to-call-pointer-to-member-function

Answer 1

More parentheses are required:

(bigCat.*pcat)();
^            ^

The function call (()) has higher precedence than the pointer-to-member binding operator (.*). The unary operators have higher precedence than the binary operators.