61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
/* -*-comment-start: "//";comment-end:""-*-
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* GNU Mes --- Maxwell Equations of Software
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* Copyright © 2017,2022 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
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*
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* This file is part of GNU Mes.
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*
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* GNU Mes is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or (at
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* your option) any later version.
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*
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* GNU Mes is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU Mes. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mes/lib.h>
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#include <stdlib.h>
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#include <string.h>
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int
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compare_int (void const *a, void const *b)
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{
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eputs ("compare: ");
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eputs (itoa (*(int *) a));
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eputs (" <? ");
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eputs (itoa (*(int *) b));
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eputs (" => ");
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eputs (itoa (*(int *) a - *(int *) b));
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eputs ("\n");
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return *(int *) a - *(int *) b;
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}
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int
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main ()
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{
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int lst[9] = { 0, 0, 5, 0, 0, 4, 3, 2, -1 };
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qsort (lst, 9, sizeof (int), compare_int);
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for (int i = 0; i < 9; i++)
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{
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eputs (itoa (i));
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eputs (":");
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eputs (itoa (lst[i]));
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eputs ("\n");
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}
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if (lst[0] != -1)
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return 1;
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if (lst[9] != 5)
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return 2;
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int x = -2;
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for (int i = 0; i < 9; i++)
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if (x > lst[i])
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return 3 + i;
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return 0;
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}
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