user: 请将以下的汇编代码转换成C语言代码:

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  cmpl   $0x5,(%rsp)
  je     L66
  xor    %r12d,%r12d
  lea    D41(%rip),%r15
  mov    %rsp,%r13
  lea    D80(%rip),%r14
  lea    D11(%rip),%rbp
  lea    D8(%rip),%rbx
  nopw   0x0(%rax,%rax,1)
L22:
  mov    %r15,%rdi
  call   <printf@plt>
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %r13,%rsi
  mov    %rbp,%rdi
  call   <scanf@plt>
  cmpl   $0x5,(%rsp)
  ja     L57
  mov    (%rsp),%eax
  movslq (%rbx,%rax,4),%rax
  add    %rbx,%rax
  notrack jmp *%rax
  xchg   %ax,%ax
  xor    %edi,%edi
  call   <exit@plt>
L57:
  lea    D23(%rip),%rdi
  call   <printf@plt>
L50:
  cmpl   $0x5,(%rsp)
  jne    L22
L66:
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L62
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  xchg   %ax,%ax
  lea    D71(%rip),%rdi
  call   <printf@plt>
  mov    %r12,%rdi
  call   <preorder@plt>
  jmp    L50
  cs nopw 0x0(%rax,%rax,1)
  lea    D90(%rip),%rdi
  call   <printf@plt>
  lea    0x4(%rsp),%rsi
  mov    %rbp,%rdi
  call   <scanf@plt>
  mov    0x4(%rsp),%esi
  mov    %r12,%rdi
  call   <insert@plt>
  lea    D76(%rip),%rdi
  mov    %rax,%r12
  call   <printf@plt>
  jmp    L50
  nopl   0x0(%rax)
  lea    D56(%rip),%rdi
  call   <printf@plt>
  mov    %r12,%rdi
  call   <postorder@plt>
  jmp    L50
  nopl   0x0(%rax)
  lea    D66(%rip),%rdi
  call   <printf@plt>
  mov    %r12,%rdi
  call   <inorder@plt>
  jmp    L50
L62:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D41
datatype: string
name: extract_symbolic_data
arguments: data_label: D80
datatype: string
name: extract_symbolic_data
arguments: data_label: D11
datatype: string
name: extract_symbolic_data
arguments: data_label: D23
datatype: string
name: extract_symbolic_data
arguments: data_label: D71
datatype: string
name: extract_symbolic_data
arguments: data_label: D90
datatype: string
name: extract_symbolic_data
arguments: data_label: D76
datatype: string
name: extract_symbolic_data
arguments: data_label: D56
datatype: string
name: extract_symbolic_data
arguments: data_label: D66
datatype: string

tool: D41: 
Menu --Binary search tree 

tool: D80: 
 1. Insert	 2. Preorder Traversal 	 3.Inorder Traversal 	4.Postorder traversal


tool: D11: %d

tool: D23: 
Enter valid choice


tool: D71: 
preorder:

tool: D90: 
Enter the number to insert:

tool: D76: 	inserted successfully


tool: D56: 
 postorder:

tool: D66: 
 inorder:

assistant: ```c
int main() {
  int choice, val;
  struct node *root = NULL;
  while (choice != 5) {
    printf("\nMenu --Binary search tree ");
    printf("\n 1. Insert\t 2. Preorder Traversal \t 3.Inorder Traversal \t4.Postorder traversal\n");
    scanf("%d", &choice);
    switch (choice) {
    case 1:
      printf("\nEnter the number to insert:");
      scanf("%d", &val);
      root = insert(root, val);
      printf("\tinserted successfully\n");
      break;
    case 2:
      printf("\npreorder:");
      preorder(root);
      break;
    case 4:
      printf("\n postorder:");
      postorder(root);
      break;
    case 3:
      printf("\n inorder:");
      inorder(root);
      break;
    case 5:
      exit(0);
    default:
      printf("\nEnter valid choice\n");
    }
  }
}
```