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d9a17c07 | 1 | /* Example of a Variadic Function |
bfff8b1b | 2 | Copyright (C) 1991-2017 Free Software Foundation, Inc. |
d9a17c07 RM |
3 | |
4 | This program is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU General Public License | |
6 | as published by the Free Software Foundation; either version 2 | |
7 | of the License, or (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, if not, see <http://www.gnu.org/licenses/>. | |
16 | */ | |
17 | ||
28f540f4 RM |
18 | #include <stdarg.h> |
19 | #include <stdio.h> | |
20 | ||
21 | int | |
22 | add_em_up (int count,...) | |
23 | { | |
24 | va_list ap; | |
25 | int i, sum; | |
26 | ||
27 | va_start (ap, count); /* Initialize the argument list. */ | |
28 | ||
29 | sum = 0; | |
30 | for (i = 0; i < count; i++) | |
31 | sum += va_arg (ap, int); /* Get the next argument value. */ | |
32 | ||
33 | va_end (ap); /* Clean up. */ | |
34 | return sum; | |
35 | } | |
36 | ||
37 | int | |
38 | main (void) | |
39 | { | |
40 | /* This call prints 16. */ | |
41 | printf ("%d\n", add_em_up (3, 5, 5, 6)); | |
42 | ||
43 | /* This call prints 55. */ | |
44 | printf ("%d\n", add_em_up (10, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)); | |
45 | ||
46 | return 0; | |
47 | } |