*(*(x+2)+5) is the same as

Which of the following is an invalid variable name?

How does the strings are stored in the memory? 

What do identifiers refer to in programming?

Which class allows only one object to be created

Which of the following functions returns a pointer to the located string or a null pointer if the string is not found?

#include<iostream>

using namespace std;

int num = 10;

int main()

{

        int num = 0;

        cout << num << endl;

        return 0;

}

 What happens if a class does not have a name?

What is the purpose of a heap data structure?