user: 这段汇编代码用C语言表示是什么样的?

```asm
<getop>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  nop
L35:
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,(%rbx)
  mov    %eax,%r12d
  mov    %eax,%ebp
  cmp    $0x9,%eax
  je     L35
  cmp    $0x20,%al
  je     L35
  movb   $0x0,0x1(%rbx)
  cmp    $0x2d,%eax
  jne    L225
  movb   $0x2d,(%rbx)
  xor    %eax,%eax
  mov    $0x1,%r13d
  call   <getch@plt>
  movsbl %al,%r14d
  mov    %eax,%r12d
  mov    %eax,%ebp
  mov    %r14d,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  je     L167
L11:
  movslq %r13d,%rax
  cmpb   $0x2d,-0x1(%rbx,%rax,1)
  jne    L7
  mov    %bpl,(%rbx,%rax,1)
L7:
  lea    0x1(%r13),%ebp
  movslq %ebp,%rbp
  nop
L278:
  xor    %eax,%eax
  movslq %ebp,%r13
  call   <getch@plt>
  mov    %al,(%rbx,%rbp,1)
  movsbl %al,%edi
  mov    %eax,%r12d
  add    $0x1,%rbp
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L278
L167:
  movslq %r13d,%r14
  add    %rbx,%r14
  cmp    $0x2e,%r12d
  je     L100
L212:
  mov    D9(%rip),%rax
  movb   $0x0,(%r14)
  cmp    %r12d,(%rax)
  jne    L75
  cmpb   $0x2d,(%rbx)
  mov    $0x30,%r12d
  je     L271
L58:
  pop    %rbx
  mov    %r12d,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax,%rax,1)
L271:
  cmpb   $0x1,0x1(%rbx)
  pop    %rbx
  sbb    %r12d,%r12d
  pop    %rbp
  and    $0xfffffffd,%r12d
  add    $0x30,%r12d
  mov    %r12d,%eax
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax,%rax,1)
L75:
  mov    %r12d,%edi
  mov    $0x30,%r12d
  call   <ungetch@plt>
  cmpb   $0x2d,(%rbx)
  jne    L58
  jmp    L271
  nopl   (%rax)
L225:
  movsbl %al,%r14d
  mov    %r14d,%edi
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L88
  cmp    $0x64,%r12d
  je     L316
  jle    L227
  cmp    $0x65,%r12d
  je     L43
  cmp    $0x73,%r12d
  jne    L58
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,0x1(%rbx)
  cmp    $0x69,%al
  je     L190
  mov    $0x77,%r12d
  cmp    $0x77,%eax
  je     L58
L144:
  mov    $0x5f,%r12d
  pop    %rbx
  pop    %rbp
  mov    %r12d,%eax
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L227:
  cmp    $0x2e,%r12d
  je     L262
  cmp    $0x63,%r12d
  jne    L58
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,0x1(%rbx)
  cmp    $0x6c,%al
  jne    L144
  jmp    L58
L262:
  mov    $0x2e,%edi
  xor    %r13d,%r13d
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L349
  nopl   (%rax)
L100:
  lea    0x1(%rbx,%r13,1),%rbp
  nopl   (%rax)
L323:
  xor    %eax,%eax
  mov    %rbp,%r14
  add    $0x1,%rbp
  call   <getch@plt>
  mov    %al,-0x1(%rbp)
  movsbl %al,%edi
  mov    %eax,%r12d
  call   <isdigit@plt>
  test   %rax,%rax
  jne    L323
  jmp    L212
  cs nopw 0x0(%rax,%rax,1)
L88:
  mov    %r14d,%edi
  xor    %r13d,%r13d
  call   <isdigit@plt>
  test   %rax,%rax
  je     L167
  jmp    L11
L43:
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,0x1(%rbx)
  cmp    $0x78,%al
  jne    L144
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,0x2(%rbx)
  cmp    $0x70,%al
  jne    L144
  jmp    L58
L349:
  mov    $0x2e,%ebp
  xor    %r13d,%r13d
  jmp    L11
L190:
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,0x2(%rbx)
  cmp    $0x6e,%al
  jne    L144
  jmp    L58
  cs nopw 0x0(%rax,%rax,1)
L316:
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,0x1(%rbx)
  cmp    $0x70,%al
  jne    L144
  jmp    L58
```

assistant: ```c
int getop(char s[]) {
  int i, c;
  while ((s[0] = c = getch()) == ' ' || c == '\t')
    ;
  s[1] = 0;
  if (c != '-' && !isdigit(c) && c != '.') {
    if (c == 's') {
      if ((s[1] = c = getch()) == 'i') {
        if ((s[2] = c = getch()) == 'n')
          return 's';
        else
          return '_';
      } else if (c == 'w')
        return 'w';
      else
        return '_';
    } else if (c == 'd') {
      if ((s[1] = c = getch()) == 'p')
        return 'd';
      else
        return '_';
    } else if (c == 'c') {
      if ((s[1] = c = getch()) == 'l')
        return 'c';
      else
        return '_';
    } else if (c == 'e') {
      if ((s[1] = c = getch()) == 'x') {
        if ((s[2] = c = getch()) == 'p')
          return 'e';
        else
          return '_';
      } else
        return '_';
    } else
      return c;
  }
  i = 0;
  if (c == '-') {
    s[i++] = c;
    c = getch();
  }
  if (isdigit(c)) {
    if (s[i - 1] == '-')
      s[i] = c;
    while (isdigit(s[++i] = c = getch()))
      ;
  }
  if (c == '.') {
    while (isdigit(s[++i] = c = getch()))
      ;
  }
  s[i] = '\0';
  if (c != EOF)
    ungetch(c);
  if (s[0] == '-' && s[1] == '\0')
    return s[0];
  return '0';
}
```