When I print from a thread, it gives me weird output in C using ncurses-CodePudding

this is my thread for the timer which i use:

void *timer(void *arg){
    
    current = time(0);
    stop = current   30;
    while (1){
        current = time (0);
        if (current <= stop){
            now=stop-current;
            mvprintw(0,0,"%d",now);
            refresh();
        }
    }
    
    return NULL;
}

Edit (from comments)...

i forgot to mention that im using :

pthread_t timerth; pthread_create(&timerth, NULL, timer, NULL);

i need to print the "timerleft" value but the output looks like this :

Is there any way to print it normally? Am I missing something?

Thank you for the help.

CodePudding user response：

Maybe you need to save and restore the current cursor position??

void *timer(void *arg) {
    int x, y;
    getyx(stdscr, y, x);

    /* ... */

    move(y, x);
    return NULL;
}

CodePudding user response：

Try to add \r at the end of print string like so

mvprintw(0,0,"%d \r",now);