I have a config file in my application like below. This config need to be done before build the program. 

```
#define NO_OF_COLORS 8   

#define COLOR_RESPONCE_1 'R'
#define COLOR_RESPONCE_2 'G'
#define COLOR_RESPONCE_3 'B'
#define COLOR_RESPONCE_4 'M'
#define COLOR_RESPONCE_5 'C'
#define COLOR_RESPONCE_6 'Y'
#define COLOR_RESPONCE_7 'O'
#define COLOR_RESPONCE_8 'P'

```

Inside a class I need to add these set of values to a std::vector. Is there a way to iterate through these defines. May be using a macro?