user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  add    $0xffffffffffffff80,%rsp
  mov    %edi,-0x74(%rbp)
  mov    %rsi,-0x80(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x70(%rbp)
  lea    D28(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x70(%rbp),%rax
  mov    %rax,%rsi
  lea    D36(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <scanf@plt>
  mov    -0x70(%rbp),%eax
  test   %eax,%eax
  jne    L53
  lea    D22(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L53:
  mov    -0x70(%rbp),%eax
  cmp    $0x14,%eax
  jle    L6
  lea    D55(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L6:
  movl   $0x0,-0x6c(%rbp)
  jmp    L65
L82:
  mov    -0x6c(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,%esi
  lea    D19(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x60(%rbp),%rdx
  mov    -0x6c(%rbp),%eax
  cltq
  shl    $0x2,%rax
  add    %rdx,%rax
  mov    %rax,%rsi
  lea    D11(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <scanf@plt>
  addl   $0x1,-0x6c(%rbp)
L65:
  mov    -0x70(%rbp),%eax
  cmp    %eax,-0x6c(%rbp)
  jl     L82
  mov    -0x6c(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x68(%rbp)
  movl   $0x0,-0x6c(%rbp)
  movl   $0x0,-0x64(%rbp)
  jmp    L15
L69:
  mov    -0x6c(%rbp),%eax
  cltq
  movss  -0x60(%rbp,%rax,4),%xmm0
  cvttss2si %xmm0,%eax
  mov    %eax,-0x64(%rbp)
  mov    -0x68(%rbp),%eax
  cltq
  movss  -0x60(%rbp,%rax,4),%xmm0
  mov    -0x6c(%rbp),%eax
  cltq
  movss  %xmm0,-0x60(%rbp,%rax,4)
  pxor   %xmm0,%xmm0
  cvtsi2ssl -0x64(%rbp),%xmm0
  mov    -0x68(%rbp),%eax
  cltq
  movss  %xmm0,-0x60(%rbp,%rax,4)
  addl   $0x1,-0x6c(%rbp)
  subl   $0x1,-0x68(%rbp)
L15:
  mov    -0x6c(%rbp),%eax
  cmp    -0x68(%rbp),%eax
  jl     L69
  lea    D16(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  movl   $0x0,-0x6c(%rbp)
  jmp    L8
L20:
  mov    -0x6c(%rbp),%eax
  cltq
  movss  -0x60(%rbp,%rax,4),%xmm0
  pxor   %xmm1,%xmm1
  cvtss2sd %xmm0,%xmm1
  movq   %xmm1,%rax
  mov    -0x6c(%rbp),%edx
  add    $0x1,%edx
  movq   %rax,%xmm0
  mov    %edx,%esi
  lea    D13(%rip),%rax
  mov    %rax,%rdi
  mov    $0x1,%eax
  call   <printf@plt>
  addl   $0x1,-0x6c(%rbp)
L8:
  mov    -0x70(%rbp),%eax
  cmp    %eax,-0x6c(%rbp)
  jl     L20
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L5
  call   <__stack_chk_fail@plt>
L5:
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D28
type: string
name: extract_symbolic_data
arguments: data_tag: D36
type: string
name: extract_symbolic_data
arguments: data_tag: D22
type: string
name: extract_symbolic_data
arguments: data_tag: D55
type: string
name: extract_symbolic_data
arguments: data_tag: D19
type: string
name: extract_symbolic_data
arguments: data_tag: D11
type: string
name: extract_symbolic_data
arguments: data_tag: D16
type: string
name: extract_symbolic_data
arguments: data_tag: D13
type: string

tool: D28: Enter no of array elements: 

tool: D36: %d

tool: D22: Error. Enter a valid length.

tool: D55: Maximum array length exceeded. Exiting.

tool: D19: Array element %d : 

tool: D11: %f

tool: D16: 
Result after reversal : 

tool: D13: Array element %d: %f


assistant: ```c
int main(int argc, const char *argv[]) {
  float arr[20];
  int i, j, num, temp;
  num = 0;
  printf("Enter no of array elements: ");
  scanf("%d", &num);
  if (num == 0) {
    printf("Error. Enter a valid length.");
    exit(1);
  }
  if (num > 20) {
    printf("Maximum array length exceeded. Exiting.\n");
    exit(1);
  }
  for (i = 0; i < num; i++) {
    printf("Array element %d : ", i + 1);
    scanf("%f", &arr[i]);
  }
  j = i - 1;
  i = 0;
  temp = 0;
  while (i < j) {
    temp = arr[i];
    arr[i] = arr[j];
    arr[j] = temp;
    i++;
    j--;
  }
  printf("\nResult after reversal : \n");
  for (i = 0; i < num; i++) {
    printf("Array element %d: %f\n", i + 1, arr[i]);
  }
  return (0);
}
```