user: 下面的汇编指令对应的C源代码是什么：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
L16:
  lea    D31(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D78(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  mov    -0x20(%rbp),%eax
  cmp    $0x1,%eax
  jg     L29
  mov    -0x20(%rbp),%eax
  mov    %eax,%esi
  lea    D34(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L16
L29:
  nop
  mov    -0x20(%rbp),%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jne    L22
  lea    D64(%rip),%rax
  mov    %rax,%rdi
  call   <perror@plt>
  mov    $0xffffffff,%edi
  call   <exit@plt>
L22:
  movl   $0x0,-0x18(%rbp)
  jmp    L74
L4:
  mov    -0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,%rsi
  lea    D78(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  addl   $0x1,-0x18(%rbp)
L74:
  mov    -0x20(%rbp),%eax
  cmp    %eax,-0x18(%rbp)
  jl     L4
  lea    D29(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x1c(%rbp),%rax
  mov    %rax,%rsi
  lea    D78(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  mov    -0x1c(%rbp),%edx
  mov    -0x20(%rbp),%ecx
  mov    -0x10(%rbp),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <linear_search@plt>
  mov    %eax,-0x14(%rbp)
  cmpl   $0xffffffff,-0x14(%rbp)
  jne    L18
  lea    D67(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L78
L18:
  mov    -0x14(%rbp),%eax
  mov    %eax,%esi
  lea    D52(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L78:
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L8
  call   <__stack_chk_fail@plt>
L8:
  leave
  ret
```

tool_calls: name: read_data
arguments: label: D31
data_type: string
name: read_data
arguments: label: D78
data_type: string
name: read_data
arguments: label: D34
data_type: string
name: read_data
arguments: label: D64
data_type: string
name: read_data
arguments: label: D29
data_type: string
name: read_data
arguments: label: D67
data_type: string
name: read_data
arguments: label: D52
data_type: string

tool: D31: Enter a positive length: 

tool: D78: %d

tool: D34: You entered length = %d



tool: D64: The following error occurred

tool: D29: 
Enter the element to be searched: 

tool: D67: 
Element not in the array

tool: D52: 
Index of element is %d

assistant: ```c
int main() {
  int length;
  for (;;) {
    printf("Enter a positive length: ");
    scanf("%d", &length);
    if (length > 1) {
      break;
    } else {
      printf("You entered length = %d\n\n", length);
    }
  }
  int *arr = malloc(sizeof(int) * length);
  if (arr == NULL) {
    perror("The following error occurred");
    exit(-1);
  }
  for (int i = 0; i < length; i++) {
    scanf("%d", &arr[i]);
  }
  int element;
  printf("\nEnter the element to be searched: ");
  scanf("%d", &element);
  int index = linear_search(arr, length, element);
  if (index == -1) {
    printf("\nElement not in the array");
  } else {
    printf("\nIndex of element is %d", index);
  }
  free(arr);
  return 0;
}
```