user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movb   $0x0,-0x9(%rbp)
  lea    D9(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x9(%rbp),%rax
  mov    %rax,%rsi
  lea    D37(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  movzbl -0x9(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%esi
  lea    D71(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movzbl -0x9(%rbp),%eax
  movsbl %al,%eax
  add    $0x1,%eax
  mov    %eax,%esi
  lea    D78(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D54(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  movzbl -0x9(%rbp),%eax
  cmp    $0x40,%al
  jle    L28
  movzbl -0x9(%rbp),%eax
  cmp    $0x5a,%al
  jg     L28
  lea    -0x9(%rbp),%rax
  mov    %rax,%rdi
  call   <makeLowerCase@plt>
  jmp    L53
L28:
  movzbl -0x9(%rbp),%eax
  cmp    $0x60,%al
  jle    L40
  movzbl -0x9(%rbp),%eax
  cmp    $0x7a,%al
  jg     L40
  movzbl -0x9(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <makeUpperCase@plt>
  mov    %al,-0x9(%rbp)
  jmp    L53
L40:
  lea    D19(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L53:
  lea    D28(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D57(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movzbl -0x9(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%esi
  lea    D53(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L56
  call   <__stack_chk_fail@plt>
L56:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: data_label: D9
data_type: string
name: unpack_data
arguments: data_label: D37
data_type: string
name: unpack_data
arguments: data_label: D71
data_type: string
name: unpack_data
arguments: data_label: D78
data_type: string
name: unpack_data
arguments: data_label: D54
data_type: string
name: unpack_data
arguments: data_label: D19
data_type: string
name: unpack_data
arguments: data_label: D28
data_type: string
name: unpack_data
arguments: data_label: D57
data_type: string
name: unpack_data
arguments: data_label: D53
data_type: string

tool: D9: 
Enter Single Character: 

tool: D37: %c

tool: D71: 
You entered character: %c

tool: D78: 
Character + 1 = %c

tool: D54: 

Generating upper or lower case version....

tool: D19: 
Unable to make character  Please try again.

tool: D28: 
Upper-to-Lower Case Conversation used a pointer.

tool: D57: 
Lower-to-Upper Case Conversation used a returned value.

tool: D53: 
Returned character value of function (should the altered version): %c


assistant: ```c
int main() {
  char stephenCharacter = '\0';
  printf("\nEnter Single Character: ");
  scanf("%c", &stephenCharacter);
  printf("\nYou entered character: %c", stephenCharacter);
  printf("\nCharacter + 1 = %c", stephenCharacter + 1);
  printf("\n\nGenerating upper or lower case version....\n");
  if (stephenCharacter >= 65 && stephenCharacter <= 90)
    makeLowerCase(&stephenCharacter);
  else if (stephenCharacter >= 97 && stephenCharacter <= 122)
    stephenCharacter = makeUpperCase(stephenCharacter);
  else
    printf("\nUnable to make character  Please try again.");
  printf("\nUpper-to-Lower Case Conversation used a pointer.");
  printf("\nLower-to-Upper Case Conversation used a returned value.");
  printf("\nReturned character value of function (should the altered version): %c\n", stephenCharacter);
  return 0;
}
```