1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <ansidecl.h>
#ifdef BSD
#include </usr/include/stdio.h>
#else
#include <stdio.h>
#endif
#include <stdlib.h>
#include <string.h>
int
DEFUN(main, (argc, argv), int argc AND char **argv)
{
char buf[BUFSIZ];
FILE *in = stdin, *out = stdout;
int x;
if (sscanf ("0", "%d", &x) != 1)
exit (EXIT_FAILURE);
if (argc == 2 && !strcmp (argv[1], "-opipe"))
{
out = popen ("/bin/cat", "w");
if (out == NULL)
{
perror ("popen: /bin/cat");
exit (EXIT_FAILURE);
}
}
else if (argc == 3 && !strcmp (argv[1], "-ipipe"))
{
sprintf (buf, "/bin/cat %s", argv[2]);
in = popen (buf, "r");
}
{
char name[50];
fprintf (out,
"sscanf (\"thompson\", \"%%s\", name) == %d, name == \"%s\"\n",
sscanf ("thompson", "%s", name),
name);
}
fputs ("Testing scanf (vfscanf)\n", out);
fputs ("Test 1:\n", out);
{
int n, i;
float x;
char name[50];
n = fscanf (in, "%d%f%s", &i, &x, name);
fprintf (out, "n = %d, i = %d, x = %f, name = \"%.50s\"\n",
n, i, x, name);
}
fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
fputs ("Test 2:\n", out);
{
int i;
float x;
char name[50];
(void) fscanf (in, "%2d%f%*d %[0123456789]", &i, &x, name);
fprintf (out, "i = %d, x = %f, name = \"%.50s\"\n", i, x, name);
}
fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
fputs ("Test 3:\n", out);
{
float quant;
char units[21], item[21];
while (!feof (in) && !ferror (in))
{
int count;
quant = 0.0;
units[0] = item[0] = '\0';
count = fscanf (in, "%f%20s of %20s", &quant, units, item);
(void) fscanf (in, "%*[^\n]");
fprintf (out, "count = %d, quant = %f, item = %.21s, units = %.21s\n",
count, quant, item, units);
}
}
fprintf (out, "Residual: \"%s\"\n", fgets (buf, sizeof (buf), in));
if (out != stdout)
pclose (out);
exit(EXIT_SUCCESS);
}
|
