user: 这段汇编代码用C语言表示是什么样的：

```asm
<getword>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  nop
L187:
  mov    $0x0,%eax
  call   <getch@plt>
  mov    %al,-0xa(%rbp)
  movsbl -0xa(%rbp),%eax
  mov    %eax,%edi
  call   <isspace@plt>
  test   %rax,%rax
  jne    L187
  mov    D28(%rip),%rax
  movzbl (%rax),%eax
  cmp    %al,-0xa(%rbp)
  je     L106
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  movzbl -0xa(%rbp),%edx
  mov    %dl,(%rax)
L106:
  movsbl -0xa(%rbp),%eax
  mov    %eax,%edi
  call   <isalpha@plt>
  test   %rax,%rax
  jne    L264
  cmpb   $0x5f,-0xa(%rbp)
  je     L264
  cmpb   $0x23,-0xa(%rbp)
  jne    L274
  jmp    L264
L96:
  mov    $0x0,%eax
  call   <getch@plt>
  mov    -0x8(%rbp),%rdx
  mov    %al,(%rdx)
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <isalnum@plt>
  test   %eax,%eax
  jne    L16
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x5f,%al
  je     L16
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2e,%al
  je     L16
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <ungetch@plt>
  nop
  jmp    L93
L16:
  addq   $0x1,-0x8(%rbp)
L264:
  subl   $0x1,-0x1c(%rbp)
  cmpl   $0x0,-0x1c(%rbp)
  jg     L96
  jmp    L93
L274:
  cmpb   $0x27,-0xa(%rbp)
  je     L143
  cmpb   $0x22,-0xa(%rbp)
  jne    L226
  jmp    L143
L195:
  mov    $0x0,%eax
  call   <getch@plt>
  mov    -0x8(%rbp),%rdx
  mov    %al,(%rdx)
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x5c,%al
  jne    L80
  addq   $0x1,-0x8(%rbp)
  mov    $0x0,%eax
  call   <getch@plt>
  mov    -0x8(%rbp),%rdx
  mov    %al,(%rdx)
  jmp    L29
L80:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%eax
  cmp    %al,-0xa(%rbp)
  jne    L105
  addq   $0x1,-0x8(%rbp)
  jmp    L202
L105:
  mov    -0x8(%rbp),%rax
  movzbl (%rax),%edx
  mov    D28(%rip),%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  je     L228
L29:
  addq   $0x1,-0x8(%rbp)
L143:
  subl   $0x1,-0x1c(%rbp)
  cmpl   $0x0,-0x1c(%rbp)
  jg     L195
  jmp    L93
L228:
  nop
L202:
  jmp    L93
L226:
  cmpb   $0x2f,-0xa(%rbp)
  jne    L93
  mov    $0x0,%eax
  call   <getch@plt>
  mov    %al,-0x9(%rbp)
  cmpb   $0x2a,-0x9(%rbp)
  jne    L208
  mov    $0x0,%eax
  call   <comment@plt>
  mov    %al,-0xa(%rbp)
  jmp    L93
L208:
  cmpb   $0x2f,-0x9(%rbp)
  jne    L124
  nop
L170:
  mov    $0x0,%eax
  call   <getch@plt>
  mov    %al,-0xa(%rbp)
  mov    D28(%rip),%rax
  movzbl (%rax),%eax
  cmp    %al,-0xa(%rbp)
  je     L93
  cmpb   $0xa,-0xa(%rbp)
  jne    L170
  jmp    L93
L124:
  movsbl -0x9(%rbp),%eax
  mov    %eax,%edi
  call   <ungetch@plt>
L93:
  mov    -0x8(%rbp),%rax
  movb   $0x0,(%rax)
  movzbl -0xa(%rbp),%eax
  leave
  ret
```

assistant: ```c
char getword(char *word, int lim) {
  char c;
  char d;
  char *w = word;
  while (isspace(c = getch()))
    ;
  if (c != EOF)
    *w++ = c;
  if (isalpha(c) || c == '_' || c == '#')
    for (; --lim > 0; w++) {
      if (!isalnum(*w = getch()) && *w != '_' && *w != '.') {
        ungetch(*w);
        break;
      }
    }
  else if (c == '\'' || c == '\"') {
    for (; --lim > 0; w++)
      if ((*w = getch()) == '\\')
        *++w = getch();
      else if (*w == c) {
        w++;
        break;
      } else if (*w == EOF)
        break;
  } else if (c == '/') {
    if ((d = getch()) == '*') {
      c = comment();
    } else if (d == '/') {
      while ((c = getch()) != EOF && c != '\n')
        ;
    } else {
      ungetch(d);
    }
  }
  *w = '\0';
  return c;
}
```