Question

I have class like below

#include <iostream>

#define Gb MemorySizeUnit.Gb
#define Mb MemorySizeUnit.Mb
#define Kb MemorySizeUnit.Kb

using namespace std;

enum MemorySizeUnit {Gb, Mb, Kb};

class Test
{
  private:
  MemorySizeUnit memSizeUnit;
  int memorySize;

  public:
  void setMemory(const int memSize, MemorySizeUnit unit);
 }

and i want to be able to do something like

Test test;
test.setMemory(20, Gb);// as opposed to test.setMemory(20, MemorySizeUnit.Gb)

Compiler does not like that in #define, i have a “.”

Answer 1

Just remove the #define altogether, enum values are placed in the outer namespace automatically. It’s not like C# or Java where the enum values have to be accessed through the enum name namespace, absnet a using-like declaration.