宏的几个特殊的使用

#define CONNECTION(_x,_y) _x##_y

INT a     = CONNECTION（10，24）;     // a = 1024
STRING s  = CONNECTION（"Lu","key"）; // s = "Lukey"

#define CONVERT_TO_CHAR(_x) #@_x

CHAR c = CONVERT_TO_CHAR(1);   // c = ‘1‘

#define CONVERT_TO_STR(_x) #_x

STRING a = CONVERT_TO_STR(1);      //a = "1"

enum TEST
{
　　TEST_T_01,
　　TEST_T_02,
}
STRING b = CONVERT_TO_STR(TEST.TEST_T_02); //b = "TEST_T_02"