1 #include <stdio.h> 2 #include <stdlib.h> 3 4 int main() 5 { 6 int i, lotsa = 100000; 7 printf("working:"); 8 for (i = 0; i < lotsa; i++) { 9 printf("%c\b", "|/-\\"[i%4]);10 fflush(stdout);11 }12 printf("\ndone.\n");13 return 0;14 }