user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <fork@plt>
  mov    %eax,%ebp
  cmp    $0xffffffff,%eax
  je     L16
  lea    0x4(%rsp),%r12
  test   %eax,%eax
  jne    L17
L2:
  lea    D82(%rip),%rdi
  lea    0x4(%rsp),%r12
  call   <puts@plt>
  xor    %eax,%eax
  call   <getpid@plt>
  lea    D80(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  xor    %eax,%eax
  call   <getppid@plt>
  lea    D20(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  lea    D26(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %r12,%rsi
  lea    D86(%rip),%rdi
  call   <scanf@plt>
  lea    D2(%rip),%rdi
  call   <puts@plt>
  mov    0x4(%rsp),%edi
  call   <exit@plt>
L17:
  lea    D44(%rip),%rdi
  call   <puts@plt>
  xor    %eax,%eax
  call   <getpid@plt>
  lea    D41(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %ebp,%esi
  lea    D21(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    D87(%rip),%rdi
  call   <puts@plt>
  mov    %r12,%rdi
  call   <wait@plt>
  mov    0x4(%rsp),%edi
  call   <WEXITSTATUS@plt>
  lea    D118(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  lea    D129(%rip),%rdi
  call   <puts@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L28
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
L16:
  lea    D48(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L2
L28:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: tag: D82
type_infered: string
name: unpack_data
arguments: tag: D80
type_infered: string
name: unpack_data
arguments: tag: D20
type_infered: string
name: unpack_data
arguments: tag: D26
type_infered: string
name: unpack_data
arguments: tag: D86
type_infered: string
name: unpack_data
arguments: tag: D2
type_infered: string
name: unpack_data
arguments: tag: D44
type_infered: string
name: unpack_data
arguments: tag: D41
type_infered: string
name: unpack_data
arguments: tag: D21
type_infered: string
name: unpack_data
arguments: tag: D87
type_infered: string
name: unpack_data
arguments: tag: D118
type_infered: string
name: unpack_data
arguments: tag: D129
type_infered: string
name: unpack_data
arguments: tag: D48
type_infered: string

tool: D82:  CHILD: This is the child process!

tool: D80:  CHILD: My PID is %d


tool: D20:  CHILD: My parent's PID is %d


tool: D26:  CHILD: Enter my exit status (make it small): 

tool: D86:  %d

tool: D2:  CHILD: I'm outta here!

tool: D44: PARENT: This is the parent process!

tool: D41: PARENT: My PID is %d


tool: D21: PARENT: My child's PID is %d


tool: D87: PARENT: I'm now waiting for my child to exit()...

tool: D118: PARENT: My child's exit status is: %d


tool: D129: PARENT: I'm outta here!

tool: D48: fork

assistant: ```c
int main(void) {
  pid_t pid;
  int rv;
  switch (pid = fork()) {
  case -1:
    perror("fork");
    exit(1);
  case 0:
    printf(" CHILD: This is the child process!\n");
    printf(" CHILD: My PID is %d\n", getpid());
    printf(" CHILD: My parent's PID is %d\n", getppid());
    printf(" CHILD: Enter my exit status (make it small): ");
    scanf(" %d", &rv);
    printf(" CHILD: I'm outta here!\n");
    exit(rv);
  default:
    printf("PARENT: This is the parent process!\n");
    printf("PARENT: My PID is %d\n", getpid());
    printf("PARENT: My child's PID is %d\n", pid);
    printf("PARENT: I'm now waiting for my child to exit()...\n");
    wait(&rv);
    printf("PARENT: My child's exit status is: %d\n", WEXITSTATUS(rv));
    printf("PARENT: I'm outta here!\n");
  }
  return 0;
}
```