user: 请将以下的汇编代码转换成C语言代码:

```asm
<main>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    $0x2b,%esi
  lea    D48(%rip),%rbx
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1e,%esi
  lea    D19(%rip),%rbp
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x2d,%esi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xfffffff6,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x2a,%esi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xc8,%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x2f,%esi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movsd  D30(%rip),%xmm0
  lea    D49(%rip),%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  mov    $0x25,%esi
  mov    %rbx,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D29(%rip),%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D48
type_guessed: string
name: extract_symbolic_data
arguments: data_tag: D19
type_guessed: string
name: extract_symbolic_data
arguments: data_tag: D30
type_guessed: byte[8]
name: extract_symbolic_data
arguments: data_tag: D49
type_guessed: string
name: extract_symbolic_data
arguments: data_tag: D29
type_guessed: string

tool: D48: ch = %c


tool: D19: f = %d


tool: {"D30": [0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x3f]}

tool: D49: f = %.2f


tool: D29: invalid operator

assistant: ```c
int main() {
  char ch;
  ch = '+';
  int f, a = 10, b = 20;
  double e, c = 10.0, d = 20.0;
  printf("ch = %c\n", ch);
  switch (ch) {
  case '+':
    f = a + b;
    printf("f = %d\n", f);
    break;
  case '-':
    f = a - b;
    printf("f = %d\n", f);
    break;
  case '*':
    f = a * b;
    printf("f = %d\n", f);
    break;
  case '/':
    f = a / b;
    printf("f = %d\n", f);
    break;
  default:
    printf("invalid operator\n");
  }
  ch = '-';
  printf("ch = %c\n", ch);
  switch (ch) {
  case '+':
    f = a + b;
    printf("f = %d\n", f);
    break;
  case '-':
    f = a - b;
    printf("f = %d\n", f);
    break;
  case '*':
    f = a * b;
    printf("f = %d\n", f);
    break;
  case '/':
    f = a / b;
    printf("f = %d\n", f);
    break;
  default:
    printf("invalid operator\n");
  }
  ch = '*';
  printf("ch = %c\n", ch);
  switch (ch) {
  case '+':
    f = a + b;
    printf("f = %d\n", f);
    break;
  case '-':
    f = a - b;
    printf("f = %d\n", f);
    break;
  case '*':
    f = a * b;
    printf("f = %d\n", f);
    break;
  case '/':
    f = a / b;
    printf("f = %d\n", f);
    break;
  default:
    printf("invalid operator\n");
  }
  ch = '/';
  printf("ch = %c\n", ch);
  switch (ch) {
  case '+':
    f = a + b;
    printf("f = %d\n", f);
    break;
  case '-':
    f = a - b;
    printf("f = %d\n", f);
    break;
  case '*':
    f = a * b;
    printf("f = %d\n", f);
    break;
  case '/':
    e = c / d;
    printf("f = %.2f\n", e);
    break;
  default:
    printf("invalid operator\n");
  }
  ch = '%';
  printf("ch = %c\n", ch);
  switch (ch) {
  case '+':
    f = a + b;
    printf("f = %d\n", f);
    break;
  case '-':
    f = a - b;
    printf("f = %d\n", f);
    break;
  case '*':
    f = a * b;
    printf("f = %d\n", f);
    break;
  case '/':
    f = a / b;
    printf("f = %d\n", f);
    break;
  default:
    printf("invalid operator\n");
  }
}
```