How to refresh the screen continuously and update it in real time [closed]

Answer 1

As the others have said, you probably want to look at the ncurses library. But if you don't need advanced formatting, perhaps something simple like this can be enough:

#include 
#include 

int main(void) {
    int number = 0;
    while (1) {
        ++number;
        printf("\rThe number is now %d.", number);
        fflush(stdout);
        sleep(1);
    }
    return 0;
}