user: What is the c source code of the assembly code below:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  add    $0xffffffffffffff80,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x78(%rbp)
  jmp    L54
L16:
  lea    -0x70(%rbp),%rax
  mov    %rax,%rsi
  lea    D11(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  addl   $0x1,-0x78(%rbp)
L54:
  mov    -0x78(%rbp),%eax
  cltq
  movzbl -0x70(%rbp,%rax,1),%eax
  test   %al,%al
  jne    L16
  mov    -0x78(%rbp),%eax
  add    $0x1,%eax
  cltq
  movb   $0x0,-0x70(%rbp,%rax,1)
  mov    -0x78(%rbp),%eax
  mov    %eax,-0x74(%rbp)
  mov    -0x74(%rbp),%eax
  and    $0x1,%eax
  test   %eax,%eax
  jne    L40
  movl   $0x0,-0x7c(%rbp)
  jmp    L43
L57:
  mov    -0x7c(%rbp),%eax
  cltq
  movzbl -0x70(%rbp,%rax,1),%eax
  mov    %al,-0x7d(%rbp)
  mov    -0x74(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x7c(%rbp),%eax
  add    %edx,%eax
  cltq
  movzbl -0x70(%rbp,%rax,1),%edx
  mov    -0x7c(%rbp),%eax
  cltq
  mov    %dl,-0x70(%rbp,%rax,1)
  mov    -0x74(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x7c(%rbp),%eax
  add    %edx,%eax
  cltq
  movzbl -0x7d(%rbp),%edx
  mov    %dl,-0x70(%rbp,%rax,1)
  addl   $0x1,-0x7c(%rbp)
L43:
  mov    -0x74(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cmp    %eax,-0x7c(%rbp)
  jl     L57
  jmp    L47
L40:
  movl   $0x0,-0x7c(%rbp)
  jmp    L67
L5:
  mov    -0x7c(%rbp),%eax
  cltq
  movzbl -0x70(%rbp,%rax,1),%eax
  mov    %al,-0x7d(%rbp)
  mov    -0x74(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x7c(%rbp),%eax
  add    %edx,%eax
  add    $0x1,%eax
  cltq
  movzbl -0x70(%rbp,%rax,1),%edx
  mov    -0x7c(%rbp),%eax
  cltq
  mov    %dl,-0x70(%rbp,%rax,1)
  mov    -0x74(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  mov    -0x7c(%rbp),%eax
  add    %edx,%eax
  add    $0x1,%eax
  cltq
  movzbl -0x7d(%rbp),%edx
  mov    %dl,-0x70(%rbp,%rax,1)
  addl   $0x1,-0x7c(%rbp)
L67:
  mov    -0x74(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  sub    $0x1,%eax
  cmp    %eax,-0x7c(%rbp)
  jl     L5
L47:
  movl   $0x0,-0x7c(%rbp)
  jmp    L7
L73:
  mov    -0x7c(%rbp),%eax
  cltq
  movzbl -0x70(%rbp,%rax,1),%eax
  movsbl %al,%eax
  mov    %eax,%esi
  lea    D2(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  addl   $0x1,-0x7c(%rbp)
L7:
  mov    -0x7c(%rbp),%eax
  cmp    -0x74(%rbp),%eax
  jl     L73
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L6
  call   <__stack_chk_fail@plt>
L6:
  leave
  ret
```

tool_calls: name: read_data
arguments: data_label: D11
data_type: string
name: read_data
arguments: data_label: D2
data_type: string

tool: D11: %s

tool: D2: %c

assistant: ```c
int main() {
  char x[100];
  char a;
  int len;
  char mid;
  int j;
  int i = 0;
  while (x[i] != '\0') {
    scanf("%s", x);
    i++;
  }
  x[i + 1] = '\0';
  len = i;
  if (len % 2 == 0) {
    for (j = 0; j < (len) / 2; j++) {
      a = x[j];
      x[j] = x[j + len / 2];
      x[j + len / 2] = a;
    }
  } else {
    for (j = 0; j < len / 2 - 1; j++) {
      a = x[j];
      x[j] = x[j + len / 2 + 1];
      x[j + len / 2 + 1] = a;
    }
  }
  for (j = 0; j < len; j++) {
    printf("%c", x[j]);
  }
  return 0;
}
```