1  #include  <stdio.h>
       2  #include  <stdlib.h>
       3  
       4  int
       5  main (int argc, char *argv[])
       6  {
       7    int i,n,r;
       8  
       9    n = i = r = -1;
      10    r = sscanf ("1234:567", "%d%n", &i, &n);
      11    printf ("%d %d %d\n", r, n, i);
      12    if (r != 1 || i != 1234 || n != 4)
      13      abort ();
      14    return 0;
      15  }