1#include <stdlib.h>
2#include <string.h>
3
4char **
5buildargv (char *input)
6{
7  static char *arglist[256];
8  int numargs = 0;
9
10  while (1)
11    {
12      while (*input == ' ')
13	input++;
14      if (*input == 0)
15	break;
16      arglist [numargs++] = input;
17      while (*input != ' ' && *input != 0)
18	input++;
19      if (*input == 0)
20	break;
21      *(input++) = 0;
22    }
23  arglist [numargs] = NULL;
24  return arglist;
25}
26
27
28int main()
29{
30  char **args;
31  char input[256];
32  int i;
33
34  strcpy(input, " a b");
35  args = buildargv(input);
36
37  if (strcmp (args[0], "a"))
38    abort ();
39  if (strcmp (args[1], "b"))
40    abort ();
41  if (args[2] != NULL)
42    abort ();
43
44  exit (0);
45}
46