How to add ANSI colors to a C code

#define ANSI_COLOR_RESET       "\x1b[0m"
#define ANSI_COLOR_UNDERLINED  "\x1b[21m"
#define ANSI_COLOR_DIM         "\x1b[30m"

#define ANSI_COLOR_RED         "\x1b[31m"
#define ANSI_COLOR_GREEN       "\x1b[32m"
#define ANSI_COLOR_YELLOW      "\x1b[33m"
#define ANSI_COLOR_BLUE        "\x1b[34m"
#define ANSI_COLOR_MAGENTA     "\x1b[35m"
#define ANSI_COLOR_CYAN        "\x1b[36m"
#define ANSI_COLOR_WHITE       "\x1b[37m"

#define ANSI_COLOR_BG_RED      "\x1b[41m"
#define ANSI_COLOR_BG_GREEN    "\x1b[42m"
#define ANSI_COLOR_BG_YELLOW   "\x1b[43m"
#define ANSI_COLOR_BG_BLUE     "\x1b[44m"
#define ANSI_COLOR_BG_MAGENTA  "\x1b[45m"
#define ANSI_COLOR_BG_CYAN     "\x1b[46m"
#define ANSI_COLOR_BG_WHITE    "\x1b[47m"

printf(ANSI_COLOR_RED "Merry Christmas!" ANSI_COLOR_RESET);