forked from TASC/HLRS-OpenMP-GPU-2024
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* OpenMP lecture exercises
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* Copyright (C) 2011 by Christian Terboven <terboven@rz.rwth-aachen.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but 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 this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <stdio.h>
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#include <omp.h>
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int fib(int n)
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{
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int x, y;
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if (n < 2)
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return n;
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x = fib(n - 1);
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y = fib(n - 2);
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return x+y;
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}
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int main()
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{
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int n,fibonacci;
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double starttime;
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printf("Please insert n, to calculate fib(n): \n");
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scanf("%d",&n);
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starttime=omp_get_wtime();
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fibonacci=fib(n);
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printf("fib(%d)=%d \n",n,fibonacci);
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printf("calculation took %lf sec\n",omp_get_wtime()-starttime);
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return 0;
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}
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