我的任务是编写一个创建三个进程的 C 程序（“procs.c”）：一个创建两个子进程的父进程。
第一个孩子应该做到以下几点：
显示“第一个孩子出生，我的 pid 是……”
显示十次消息“第一个孩子执行迭代 X”，其中 X 是迭代的次数
显示“第一个孩子安静地死去。”
第二个孩子应该做到以下几点：
显示“第二个孩子出生了，我的pid是……”
显示十次消息“第二个孩子执行迭代 X”，其中 X 是迭代的次数
显示“第二个孩子安静地死去。”
父进程应执行以下操作：
display "父进程诞生，我的pid是..."
创建第一个孩子
创建第二个孩子
显示“父进程安静地死掉。”
使用 gcc 编译程序并将可执行文件命名为“procs”。多次执行程序，注意两个孩子的输出是如何交错的。属于项目这一部分的所有文件都应该放在你的 nova 主目录中，并在 H3 分配下发布在 Webtycho 中。
该程序的一个可能输出是：
nova> ./procs
Parent process is born, my pid is 7847
First child is born, my pid is 7848
First child executes iteration: 1
First child executes iteration: 2
First child executes iteration: 3
First child executes iteration: 4
First child executes iteration: 5
Second child is born, my pid is 7849
Second child executes iteration 1
Second child executes iteration 2
Second child executes iteration 3
First child executes iteration: 6
Second child executes iteration 4
Second child executes iteration 5
Second child executes iteration 6
First child executes iteration: 7
Second child executes iteration 7
Second child executes iteration 8
Second child executes iteration 9
Second child executes iteration 10
Second child dies quietly.
First child executes iteration: 8
First child executes iteration: 9
First child executes iteration: 10
First child dies quietly.
Parent process dies quietly.
但是我得到的当前输出是：
nova2> ./procs
Parent process is born, my pid is: 1977
First child is born, my pid is: 1978
First child executes iteration: 1
First child executes iteration: 2
First child executes iteration: 3
First child executes iteration: 4
First child executes iteration: 5
First child executes iteration: 6
First child executes iteration: 7
First child executes iteration: 8
First child executes iteration: 9
First child dies quietly
Second child is born, my pid is: 1979
Second child executes iteration: 1
Second child executes iteration: 2
Second child executes iteration: 3
Second child executes iteration: 4
Second child executes iteration: 5
Second child executes iteration: 6
Second child executes iteration: 7
Second child executes iteration: 8
Second child executes iteration: 9
Second child dies quietly
Bus Error (core dumped)
我现在的代码是：
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
int main() {
int pid, i;
printf("Parent process is born, my pid is: %d\n", getpid());
pid = fork();
switch(pid) {
case -1:
/* an error occurred */
printf("Fork error");
break;
case 0:
/* this code is executed by child process #1*/
printf("First child is born, my pid is: %d\n", getpid());
for(i=1; i<10; i++)
printf("First child executes iteration: %d\n", i);
printf("First child dies quietly\n");
exit(0);
default: /* this code is executed by the parent process */
if(fork()==0) {
printf("Second child is born, my pid is: %d\n", getpid());
for(i=1; i<10; i++)
printf("Second child executes iteration: %d\n", i);
printf("Second child dies quietly\n");
exit(0);
}
wait();
printf("Parent process dies quietly.\n");
}
}
任何人都可以帮助我，我不确定出了什么问题，因为我一直在检查编码，这对我来说似乎是正确的。