#include char host_led_state_str[24]; const char *read_host_led_state(void) { led_t led_state = host_keyboard_led_state(); snprintf(host_led_state_str, sizeof(host_led_state_str), "NL:%s CL:%s SL:%s", led_state.num_lock ? "on" : "- ", led_state.caps_lock ? "on" : "- ", led_state.scroll_lock ? "on" : "- "); return host_led_state_str; }