Console progress bar

progressbar.c

#include <stdio.h>
#include <unistd.h>

int main() {
    setvbuf(stdout, NULL, _IONBF, 0);
    for(int i=0; i<100; i++) {
        usleep(70000);
        printf("\r");
        switch(i%4) {
            case 0: printf("/"); break;
            case 1: printf("-"); break;
            case 2: printf("\\"); break;
            case 3: printf("|"); break;
        }
    }
    puts("");
}