Simple ASCII spinner in C

spinner.c

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

#define DELAY 100000 // microseconds

void main() {
        printf(" ");
        while(1) {
                printf("\b|");
                fflush(stdout);
                usleep(DELAY);
                printf("\b/");
                fflush(stdout);
                usleep(DELAY);
                printf("\b-");
                fflush(stdout);
                usleep(DELAY);
                printf("\b\\");
                fflush(stdout);
                usleep(DELAY);
        }
}