user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    $0x0,%eax
  call   <fork@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jns    L40
  lea    D21(%rip),%rax
  mov    %rax,%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L40:
  cmpq   $0x0,-0x10(%rbp)
  jne    L11
  lea    D42(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  lea    D61(%rip),%rax
  mov    %rax,%rdi
  call   <change_pname@plt>
  mov    $0x0,%eax
  call   <fork@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jns    L58
  lea    D23(%rip),%rax
  mov    %rax,%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L58:
  cmpq   $0x0,-0x10(%rbp)
  jne    L50
  lea    D99(%rip),%rax
  mov    %rax,%rdi
  call   <change_pname@plt>
  lea    D56(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x0,%eax
  call   <fork@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jns    L43
  lea    D39(%rip),%rax
  mov    %rax,%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L43:
  cmpq   $0x0,-0x10(%rbp)
  jne    L15
  lea    D142(%rip),%rax
  mov    %rax,%rdi
  call   <change_pname@plt>
  lea    D163(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  lea    D32(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0xa,%edi
  call   <sleep@plt>
  lea    D10(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0xd,%edi
  call   <exit@plt>
L15:
  lea    D105(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  lea    -0x14(%rbp),%rax
  mov    %rax,%rdi
  call   <wait@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x14(%rbp),%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  lea    D162(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x13,%edi
  call   <exit@plt>
L50:
  mov    $0x0,%eax
  call   <fork@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jns    L33
  lea    D23(%rip),%rax
  mov    %rax,%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L33:
  cmpq   $0x0,-0x10(%rbp)
  jne    L4
  lea    D174(%rip),%rax
  mov    %rax,%rdi
  call   <change_pname@plt>
  lea    D166(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  lea    D143(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0xa,%edi
  call   <sleep@plt>
  lea    D196(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x11,%edi
  call   <exit@plt>
L4:
  lea    D40(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  lea    -0x14(%rbp),%rax
  mov    %rax,%rdi
  call   <wait@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x14(%rbp),%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  lea    -0x14(%rbp),%rax
  mov    %rax,%rdi
  call   <wait@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x14(%rbp),%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  lea    D59(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x10,%edi
  call   <exit@plt>
L11:
  mov    $0x3,%edi
  call   <sleep@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <show_pstree@plt>
  lea    -0x14(%rbp),%rax
  mov    %rax,%rdi
  call   <wait@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x14(%rbp),%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L66
  call   <__stack_chk_fail@plt>
L66:
  leave
  ret
```

tool_calls: name: read_data
arguments: label: D21
type_guessed: string
name: read_data
arguments: label: D42
type_guessed: string
name: read_data
arguments: label: D61
type_guessed: string
name: read_data
arguments: label: D23
type_guessed: string
name: read_data
arguments: label: D99
type_guessed: string
name: read_data
arguments: label: D56
type_guessed: string
name: read_data
arguments: label: D39
type_guessed: string
name: read_data
arguments: label: D142
type_guessed: string
name: read_data
arguments: label: D163
type_guessed: string
name: read_data
arguments: label: D32
type_guessed: string
name: read_data
arguments: label: D10
type_guessed: string
name: read_data
arguments: label: D105
type_guessed: string
name: read_data
arguments: label: D162
type_guessed: string
name: read_data
arguments: label: D174
type_guessed: string
name: read_data
arguments: label: D166
type_guessed: string
name: read_data
arguments: label: D143
type_guessed: string
name: read_data
arguments: label: D196
type_guessed: string
name: read_data
arguments: label: D40
type_guessed: string
name: read_data
arguments: label: D59
type_guessed: string

tool: D21: main: fork

tool: D42: A created! 


tool: D61: A

tool: D23: A: fork

tool: D99: B

tool: D56: B created! 


tool: D39: B: fork

tool: D142: D

tool: D163: D created! 


tool: D32: D: Sleeping...


tool: D10: D: Exiting...


tool: D105: B: Waiting... 


tool: D162: B: Exiting...


tool: D174: C

tool: D166: C created! 


tool: D143: C: Sleeping...


tool: D196: C: Exiting...


tool: D40: A: Waiting... 


tool: D59: A: Exiting...


assistant: ```c
int main(void) {
  pid_t pid;
  int status;
  pid = fork();
  if (pid < 0) {
    perror("main: fork");
    exit(1);
  }
  if (pid == 0) {
    printf("A created! \n");
    change_pname("A");
    pid = fork();
    if (pid < 0) {
      perror("A: fork");
      exit(1);
    }
    if (pid == 0) {
      change_pname("B");
      printf("B created! \n");
      pid = fork();
      if (pid < 0) {
        perror("B: fork");
        exit(1);
      }
      if (pid == 0) {
        change_pname("D");
        printf("D created! \n");
        printf("D: Sleeping...\n");
        sleep(10);
        printf("D: Exiting...\n");
        exit(13);
      }
      printf("B: Waiting... \n");
      pid = wait(&status);
      explain_wait_status(pid, status);
      printf("B: Exiting...\n");
      exit(19);
    }
    pid = fork();
    if (pid < 0) {
      perror("A: fork");
      exit(1);
    }
    if (pid == 0) {
      change_pname("C");
      printf("C created! \n");
      printf("C: Sleeping...\n");
      sleep(10);
      printf("C: Exiting...\n");
      exit(17);
    }
    printf("A: Waiting... \n");
    pid = wait(&status);
    explain_wait_status(pid, status);
    pid = wait(&status);
    explain_wait_status(pid, status);
    printf("A: Exiting...\n");
    exit(16);
  }
  sleep(3);
  show_pstree(pid);
  pid = wait(&status);
  explain_wait_status(pid, status);
  return 0;
}
```