C++ 用枚举类型替代宏定义连续的常量

#define    cBlack     0
    #define    cNavy      1
    #define    cGreen    2
    #define    cTeal       3
    #define    cMaroon  4
    #define    cPurple    5
    #define    cOlive      6
    #define    cSliver     7
    #define    cGray      8
    #define    cBlue       9
    #define    cLime      10
    #define    cCyan      11
    #define    cRed        12
    #define    cMagenta 13
    #define    cYellow     14
    #define    cWhite      15

#include <iostream>
#include <windows.h>
using namespace std;
struct HannsC { DWORD fc; DWORD bg; };
struct HannXy { SHORT pX; SHORT pY; };
enum cColor{ cBlack=0,cNavy,cGreen,cTeal,cMaroon,cPurple, cOlive, cSliver,
       cGray,   cBlue,cLime, cCyan,cRed,   cMagenta,cYellow,cWhite };
HannsC setC(DWORD fc = 7, DWORD bg = 0)
{
  fc %= 16, bg %= 16;
  HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);
  SetConsoleTextAttribute(hConsole,fc|bg<<4);
  return {fc, bg*16};
}
HannXy Goto(SHORT x = 0, SHORT y = -1)
{
    CONSOLE_SCREEN_BUFFER_INFO pBuffer;
  COORD position = {x, y};
    HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE); 
  if (position.Y==-1){
    GetConsoleScreenBufferInfo(hConsole, &pBuffer); 
    position.Y = pBuffer.dwCursorPosition.Y;
  }    
    SetConsoleCursorPosition(hConsole, position);
  return {x, y};
}
ostream& operator<<(ostream& _os, HannsC _mc) { return _os;}
ostream& operator<<(ostream& _os, HannXy _xy) { return _os;}
ostream& cr(ostream& _os) { _os.put('\n');_os.flush();return _os;}
int main(void)
{
  cout << setC(cNavy,cLime) << "abcdefghijklmnopqrstuvwxyz" << cr;
  cout << Goto(16,3) << setC(cYellow,cBlue) << "abcdefghijkl" 
     << setC(cBlue,cYellow) << Goto(30) << 123 << cr << cr;
  cout << setC(cMagenta,cOlive) << 12312303236131230 << cr;
  cout << setC(cGreen,cWhite) << Goto(18,9) << "3.1415926535897932384626";
  cout << Goto(30) << setC(cRed) << "END!" << Goto() << "cr && !lf";
  cout << setC(cCyan) << cr << cr << "my C++ version: " << __cplusplus ;
  cout << setC() << cr;
  return 0;
}