68 lines
1.0 KiB
C
68 lines
1.0 KiB
C
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <stdint.h>
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#include <assert.h>
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#include "helpers.h"
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#include "helpers.c"
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uint64_t shots = 0,
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shots_in = 0;
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double pi = 0,
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t1;
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void alarm_handler(int)
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{
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printf("pi = %f\n", pi);
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printf("le nombre de tirs est de %f\n", (double)shots);
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alarm(5);
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}
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void int_handler(int)
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{
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char c;
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alarm(0);
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printf("Voulez-vous quitter ? (y/n)\n");
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c = getchar();
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if (c == 'y' || c == 'Y')
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{
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printf("Le temps écoulé est de %f\n", tstamp() - t1);
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exit(0);
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}
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alarm(5);
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}
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void quit_handler(int)
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{
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shots = 0;
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shots_in = 0;
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t1 = tstamp();
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}
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int main(int argc, char *argv[])
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{
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double x, y;
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t1 = tstamp();
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alarm(5);
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set_signal_handler(SIGALRM, &alarm_handler);
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set_signal_handler(SIGINT, &int_handler);
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set_signal_handler(SIGQUIT, &quit_handler);
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while (1)
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{
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x = ((double)rand()) / (double)RAND_MAX;
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y = ((double)rand()) / (double)RAND_MAX;
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shots++;
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if ((x * x + y * y) <= 1)
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shots_in++;
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pi = 4 * (double)(shots_in) / shots;
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}
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}
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