运行时检查失败#3 - 正在使用变量'direct'而不进行初始化

Question

在这部分代码中是一个错误.它说

"运行时检查失败#3 - 正在使用变量'direct'而未进行初始化."

我该如何解决这个错误？

bool loop=true;
int direct;

al_install_keyboard();

ALLEGRO_TIMER *timer = al_create_timer (0.4);
ALLEGRO_EVENT_QUEUE *keystroke = al_create_event_queue();
al_register_event_source(keystroke ,al_get_keyboard_event_source() );
al_register_event_source (keystroke , al_get_timer_event_source(timer));
al_start_timer(timer);

do{
    ALLEGRO_EVENT input;
    al_wait_for_event(keystroke , &input );
    if (input.type == ALLEGRO_EVENT_KEY_DOWN){
        switch(input.keyboard.keycode){
        case ALLEGRO_KEY_DOWN: direct=DOWN; break;
        case ALLEGRO_KEY_UP : direct=UP;break;
        case ALLEGRO_KEY_LEFT: direct=LEFT;break;
        case ALLEGRO_KEY_RIGHT: direct=RIGHT;break;
        case ALLEGRO_KEY_ESCAPE: loop= false;
        }
    }

    if(input.type==ALLEGRO_EVENT_TIMER){
        switch(direct){
        case DOWN: moove_snake(DOWN) ; break;
        case UP: moove_snake(UP) ; break;
        case LEFT: moove_snake(LEFT) ; break;
        case RIGHT: moove_snake(RIGHT) ; break;
        }
    }

}while (loop);

Answer 1

初始化:)

int direct = 0;