user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  push   %rbp
  lea    D47(%rip),%rdi
  lea    D101(%rip),%rbp
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  call   <printf@plt>
  lea    0xf(%rsp),%rsi
  lea    D24(%rip),%rdi
  xor    %eax,%eax
  call   <scanf@plt>
  lea    D69(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    0x10(%rsp),%rsi
  mov    %rbp,%rdi
  xor    %eax,%eax
  call   <scanf@plt>
  lea    D95(%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     L115
  lea    D84(%rip),%rdx
  cmp    %rdx,%rax
  je     L70
  lea    D97(%rip),%rdx
  cmp    %rdx,%rax
  je     L70
  lea    D62(%rip),%rdx
  cmp    %rdx,%rax
  je     L95
  lea    D55(%rip),%rdx
  cmp    %rdx,%rax
  je     L95
  lea    D107(%rip),%rdx
  cmp    %rdx,%rax
  je     L62
  lea    D39(%rip),%rdx
  cmp    %rdx,%rax
  je     L62
  lea    D8(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L41
L70:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  movaps %xmm0,%xmm2
  subss  %xmm1,%xmm2
L12:
  lea    D2(%rip),%rdi
  cvtss2sd %xmm0,%xmm0
  cvtss2sd %xmm2,%xmm2
  cvtss2sd %xmm1,%xmm1
  mov    $0x3,%eax
  call   <printf@plt>
L41:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L74
  add    $0x20,%rsp
  xor    %eax,%eax
  pop    %rbp
  ret
L115:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  mov    $0x3,%eax
  lea    D108(%rip),%rdi
  movaps %xmm0,%xmm2
  cvtss2sd %xmm0,%xmm0
  addss  %xmm1,%xmm2
  cvtss2sd %xmm1,%xmm1
  cvtss2sd %xmm2,%xmm2
  call   <printf@plt>
  jmp    L41
L62:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  mov    $0x3,%eax
  lea    D116(%rip),%rdi
  movaps %xmm0,%xmm2
  cvtss2sd %xmm0,%xmm0
  divss  %xmm1,%xmm2
  cvtss2sd %xmm1,%xmm1
  cvtss2sd %xmm2,%xmm2
  call   <printf@plt>
  jmp    L41
L95:
  movss  0x10(%rsp),%xmm0
  movss  0x14(%rsp),%xmm1
  movaps %xmm0,%xmm2
  mulss  %xmm1,%xmm2
  jmp    L12
L74:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: label: D47
datatype: string
name: read_data
arguments: label: D101
datatype: string
name: read_data
arguments: label: D24
datatype: string
name: read_data
arguments: label: D69
datatype: string
name: read_data
arguments: label: D95
datatype: string
name: read_data
arguments: label: D84
datatype: string
name: read_data
arguments: label: D97
datatype: string
name: read_data
arguments: label: D62
datatype: string
name: read_data
arguments: label: D55
datatype: string
name: read_data
arguments: label: D107
datatype: string
name: read_data
arguments: label: D39
datatype: string
name: read_data
arguments: label: D8
datatype: string
name: read_data
arguments: label: D2
datatype: string
name: read_data
arguments: label: D108
datatype: string
name: read_data
arguments: label: D116
datatype: string

tool: D47: What operation do you want to do?
	A) Addition
	B) Subtraction
	C) Multiplication
	D) Division

tool: D101: %f

tool: D24: %c

tool: D69: Please enter a number: 

tool: D95: Please enter another number: 

tool: D84: B

tool: D97: b

tool: D62: C

tool: D55: c

tool: D107: d

tool: D39: D

tool: D8: Sorry, that's an invalid character.

tool: D2: The difference of %.2f and %.2f is %.2f.


tool: D108: The sum of %.2f and %.2f is %.2f.


tool: D116: 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;
}
```