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102 lines
1.5 KiB
102 lines
1.5 KiB
#include <stdlib.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <errno.h>
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#include <time.h>
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int my_atoi(char *str)
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{
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int i;
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int posi;
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int num;
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i = 0;
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posi = 1;
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num = 0;
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while (str[i] == 32 || (str[i] >= 9 && str[i] <= 13))
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i++;
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while (str[i] == '-' || str[i] == '+')
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{
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if (str[i] == '-')
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posi = posi * -1;
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i++;
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}
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while (str[i] >= 48 && str[i] <= 57)
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{
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num = num * 10;
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num = num + (str[i] - 48);
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i++;
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}
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return (num * posi);
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}
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void my_putnbr(int nb)
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{
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char c;
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if (nb < 0)
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{
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if (nb == -2147483648)
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{
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write(1, "-", 1);
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write(1, "2", 1);
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my_putnbr(147483648);
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return ;
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}
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nb = nb * -1;
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write(1, "-", 1);
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}
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if (nb >= 0 && nb < 10)
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{
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c = nb + '0';
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write(1, &c, 1);
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}
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if (nb >= 10)
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{
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my_putnbr(nb / 10);
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my_putnbr(nb % 10);
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}
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}
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int main(int argc, char **argv)
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{
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pid_t pid;
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int i;
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int j;
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int n;
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i = 0;
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j = 0;
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if (argc != 2)
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{
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write(1, "T'es bourré, on veut qu'un seul chiffre qu'on t'dis\n", 53);
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exit(1);
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}
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n = my_atoi(argv[1]);
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while(j < n)
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{
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switch(pid=fork())
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{
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case -1 :
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write(2, "fork foireux\n", 13);
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exit(errno);
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case 0 :
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my_putnbr(getpid());
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while (i < 10)
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{
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my_putnbr(i);
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write(1, "\n", 1);
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nanosleep((const struct timespec[]){{0, 500000000L}}, NULL);
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i++;
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}
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exit(2);
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}
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j++;
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}
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wait(NULL);
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write(1, "Fin du processus père de pid ", 30);
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my_putnbr(getpid());
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write(1, ".\n", 3);
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exit(0);
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}
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