main()1 main()
2 {
3   static char static_char_array[1];
4   static char *static_char_pointer;
5   static char static_char;
6   char  char_array[1];
7   char *char_pointer;
8   char  character;
9 
10   char *cp, c;
11 
12   c = cp - static_char_array;   /* error */
13   c = cp - static_char_pointer;
14   c = cp - &static_char;        /* error */
15   c = cp - char_array;
16   c = cp - char_pointer;
17   c = cp - &character;
18 }
19