user: 下面的汇编指令对应的C源代码是什么:

```asm
<main>:
  endbr64
  push   %rbp
  lea    D127(%rip),%rdi
  lea    D115(%rip),%rbp
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  call   <printf@plt>
  lea    0xf(%rsp),%rsi
  lea    D15(%rip),%rdi
  xor    %eax,%eax
  call   <scanf@plt>
  lea    D148(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    0x10(%rsp),%rsi
  mov    %rbp,%rdi
  xor    %eax,%eax
  call   <scanf@plt>
  lea    D80(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    0x14(%rsp),%rsi
  mov    %rbp,%rdi
  xor    %eax,%eax
  call   <scanf@plt>
  movsbq 0xf(%rsp),%rax
  mov    %eax,%edx
  and    $0xffffffdf,%edx
  cmp    $0x41,%dl
  je     L39
  lea    D92(%rip),%rdx
  cmp    %rdx,%rax
  je     L11
  lea    D116(%rip),%rdx
  cmp    %rdx,%rax
  je     L11
  lea    D23(%rip),%rdx
  cmp    %rdx,%rax
  je     L114
  lea    D21(%rip),%rdx
  cmp    %rdx,%rax
  je     L114
  lea    D2(%rip),%rdx
  cmp    %rdx,%rax
  je     L55
  lea    D132(%rip),%rdx
  cmp    %rdx,%rax
  je     L55
  lea    D110(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L45
L11:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  movaps %xmm0,%xmm2
  subss  %xmm1,%xmm2
L13:
  lea    D54(%rip),%rdi
  cvtss2sd %xmm0,%xmm0
  cvtss2sd %xmm2,%xmm2
  cvtss2sd %xmm1,%xmm1
  mov    $0x3,%eax
  call   <printf@plt>
L45:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L92
  add    $0x20,%rsp
  xor    %eax,%eax
  pop    %rbp
  ret
L39:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  mov    $0x3,%eax
  lea    D105(%rip),%rdi
  movaps %xmm0,%xmm2
  cvtss2sd %xmm0,%xmm0
  addss  %xmm1,%xmm2
  cvtss2sd %xmm1,%xmm1
  cvtss2sd %xmm2,%xmm2
  call   <printf@plt>
  jmp    L45
L55:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  mov    $0x3,%eax
  lea    D0(%rip),%rdi
  movaps %xmm0,%xmm2
  cvtss2sd %xmm0,%xmm0
  divss  %xmm1,%xmm2
  cvtss2sd %xmm1,%xmm1
  cvtss2sd %xmm2,%xmm2
  call   <printf@plt>
  jmp    L45
L114:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  movaps %xmm0,%xmm2
  mulss  %xmm1,%xmm2
  jmp    L13
L92:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: label: D127
type_guessed: string
name: disassemble_data
arguments: label: D115
type_guessed: string
name: disassemble_data
arguments: label: D15
type_guessed: string
name: disassemble_data
arguments: label: D148
type_guessed: string
name: disassemble_data
arguments: label: D80
type_guessed: string
name: disassemble_data
arguments: label: D92
type_guessed: string
name: disassemble_data
arguments: label: D116
type_guessed: string
name: disassemble_data
arguments: label: D23
type_guessed: string
name: disassemble_data
arguments: label: D21
type_guessed: string
name: disassemble_data
arguments: label: D2
type_guessed: string
name: disassemble_data
arguments: label: D132
type_guessed: string
name: disassemble_data
arguments: label: D110
type_guessed: string
name: disassemble_data
arguments: label: D54
type_guessed: string
name: disassemble_data
arguments: label: D105
type_guessed: string
name: disassemble_data
arguments: label: D0
type_guessed: string

tool: D127: What operation do you want to do?
	A) Addition
	B) Subtraction
	C) Multiplication
	D) Division

tool: D115: %f

tool: D15: %c

tool: D148: Please enter a number: 

tool: D80: Please enter another number: 

tool: D92: B

tool: D116: b

tool: D23: C

tool: D21: c

tool: D2: d

tool: D132: D

tool: D110: Sorry, that's an invalid character.

tool: D54: The difference of %.2f and %.2f is %.2f.


tool: D105: The sum of %.2f and %.2f is %.2f.


tool: D0: The quotient of %.2f and %.2f is %.2f.


assistant: ```c
int main() {
  char letter;
  float num1, num2;
  printf("What operation do you want to do?\n\tA) Addition\n\tB) Subtraction\n\tC) Multiplication\n\tD) Division");
  scanf("%c", &letter);
  printf("Please enter a number: ");
  scanf("%f", &num1);
  printf("Please enter another number: ");
  scanf("%f", &num2);
  if (letter == 'A' || letter == 'a') {
    printf("The sum of %.2f and %.2f is %.2f.\n", num1, num2, num1 + num2);
  } else if (letter == "B" || letter == "b") {
    printf("The difference of %.2f and %.2f is %.2f.\n", num1, num2, num1 - num2);
  } else if (letter == "C" || letter == "c") {
    printf("The difference of %.2f and %.2f is %.2f.\n", num1, num2, num1 * num2);
  } else if (letter == "D" || letter == "d") {
    printf("The quotient of %.2f and %.2f is %.2f.\n", num1, num2, num1 / num2);
  } else {
    printf("Sorry, that's an invalid character.");
  }
  return 0;
}
```