Question

How to use a global variable and a class member variable with the same name in C++

Answer 1

#include <iostream>

// Global variable
int value = 33;

class MyClass {
public:
   // class member variable with the same name as the global variable
   int value = 100;
   
   void printValue() {
      std::cout << "Global value: " << ::value << "\n";  // Global variable
      std::cout << "Member value: " << value << "\n";    // Member variable
   }
};

int main() {
   MyClass obj;
   
   obj.printValue();   
}

   
    
/*
run:
   
Global value: 33
Member value: 100
 
*/

 

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