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   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  movb   $0x30,0xf(%rsp)
  lea    D191(%rip),%r13
  lea    D76(%rip),%r12
  lea    D23(%rip),%rbp
  jmp    L65
L107:
  cmp    $0x64,%al
  jne    L55
  lea    D103(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  lea    D203(%rip),%rdi
  mov    $0x0,%eax
  call   <scanf@plt>
  mov    0x14(%rsp),%esi
  test   %esi,%esi
  je     L44
  mov    0x10(%rsp),%edi
  call   <multiply@plt>
  mov    %eax,%esi
  lea    D144(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L65
L111:
  lea    D103(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  lea    D203(%rip),%rdi
  mov    $0x0,%eax
  call   <scanf@plt>
  mov    0x14(%rsp),%esi
  mov    0x10(%rsp),%edi
  call   <add@plt>
  mov    %eax,%esi
  lea    D144(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L65:
  lea    D175(%rip),%rbx
L55:
  cmpb   $0x71,0xf(%rsp)
  je     L85
  mov    %r13,%rdi
  call   <puts@plt>
  mov    %r12,%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    %rbx,%rdi
  call   <puts@plt>
  lea    D81(%rip),%rdi
  call   <puts@plt>
  lea    D146(%rip),%rdi
  call   <puts@plt>
  lea    0xf(%rsp),%rsi
  lea    D121(%rip),%rdi
  mov    $0x0,%eax
  call   <scanf@plt>
  movzbl 0xf(%rsp),%esi
  lea    -0x42(%rsi),%eax
  cmp    $0x38,%al
  ja     L63
  movsbl %sil,%esi
  lea    D0(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movzbl 0xf(%rsp),%eax
  cmp    $0x63,%al
  je     L124
  jg     L107
  cmp    $0x61,%al
  je     L111
  cmp    $0x62,%al
  jne    L55
  lea    D103(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  lea    D203(%rip),%rdi
  mov    $0x0,%eax
  call   <scanf@plt>
  mov    0x14(%rsp),%esi
  mov    0x10(%rsp),%edi
  call   <subtract@plt>
  mov    %eax,%esi
  lea    D144(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L65
L124:
  lea    D103(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    0x14(%rsp),%rdx
  lea    0x10(%rsp),%rsi
  lea    D203(%rip),%rdi
  mov    $0x0,%eax
  call   <scanf@plt>
  mov    0x14(%rsp),%esi
  mov    0x10(%rsp),%edi
  call   <multiply@plt>
  mov    %eax,%esi
  lea    D144(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L65
L44:
  lea    D82(%rip),%rdi
  call   <puts@plt>
  jmp    L65
L85:
  mov    $0x0,%eax
L63:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L13
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L13:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: label: D191
data_type: string
name: disassemble_data
arguments: label: D76
data_type: string
name: disassemble_data
arguments: label: D23
data_type: string
name: disassemble_data
arguments: label: D103
data_type: string
name: disassemble_data
arguments: label: D203
data_type: string
name: disassemble_data
arguments: label: D144
data_type: string
name: disassemble_data
arguments: label: D175
data_type: string
name: disassemble_data
arguments: label: D81
data_type: string
name: disassemble_data
arguments: label: D146
data_type: string
name: disassemble_data
arguments: label: D121
data_type: string
name: disassemble_data
arguments: label: D0
data_type: string
name: disassemble_data
arguments: label: D82
data_type: string

tool: D191: ====== Choose your option =====

tool: D76: a. Add

tool: D23: b. Subtract

tool: D103: Enter 2 nos x and y: 

tool: D203: %d%d

tool: D144: Result: %d


tool: D175: c. Multiply

tool: D81: d. Divide

tool: D146: q. Quit


tool: D121: %c

tool: D0: choice=%c


tool: D82: Error: Cannot divide by 0

assistant: ```c
int main() {
  int x, y;
  char choice = '0';
  while (choice != 'q') {
    printf("====== Choose your option =====\n");
    printf("a. Add\n");
    printf("b. Subtract\n");
    printf("c. Multiply\n");
    printf("d. Divide\n");
    printf("q. Quit\n\n");
    scanf("%c", &choice);
    if (choice < 66 || choice > 122)
      return;
    printf("choice=%c\n", choice);
    switch (choice) {
    case 'a':
      printf("Enter 2 nos x and y: ");
      scanf("%d%d", &x, &y);
      printf("Result: %d\n", add(x, y));
      break;
    case 'b':
      printf("Enter 2 nos x and y: ");
      scanf("%d%d", &x, &y);
      printf("Result: %d\n", subtract(x, y));
      break;
    case 'c':
      printf("Enter 2 nos x and y: ");
      scanf("%d%d", &x, &y);
      printf("Result: %d\n", multiply(x, y));
      break;
    case 'd':
      printf("Enter 2 nos x and y: ");
      scanf("%d%d", &x, &y);
      if (y != 0)
        printf("Result: %d\n", multiply(x, y));
      else
        printf("Error: Cannot divide by 0\n");
      break;
    case 'q':
      break;
    }
  }
  return 0;
}
```