user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<main>:
  endbr64
  push   %r12
  lea    D28(%rip),%r12
  lea    D27(%rip),%rdi
  push   %rbp
  mov    %r12,%rsi
  push   %rbx
  call   <fopen@plt>
  test   %rax,%rax
  je     L18
  mov    %rax,%rbp
  xor    %ebx,%ebx
  nopl   0x0(%rax)
L30:
  mov    %ebx,%edi
  mov    %rbp,%rsi
  add    $0x1,%ebx
  call   <fputc@plt>
  cmp    $0xff,%ebx
  jne    L30
  mov    %rbp,%rdi
  call   <fclose@plt>
  mov    %r12,%rsi
  lea    D25(%rip),%rdi
  call   <fopen@plt>
  mov    %rax,%rbp
  test   %rax,%rax
  je     L18
  mov    %rax,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  mov    %rbp,%rsi
  xor    %edi,%edi
  call   <fputc@plt>
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <fputc@plt>
  mov    %rbp,%rsi
  xor    %edi,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  mov    $0xff,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  xor    %edi,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  xor    %edi,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  xor    %edi,%edi
  call   <fputc@plt>
  mov    %rbp,%rsi
  xor    %edi,%edi
  call   <fputc@plt>
  mov    %rbp,%rdi
  call   <fclose@plt>
  xor    %eax,%eax
L35:
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L18:
  or     $0xffffffff,%eax
  jmp    L35
```

tool_calls: name: disassemble_data
arguments: data_label: D28
data_type: string
name: disassemble_data
arguments: data_label: D27
data_type: string
name: disassemble_data
arguments: data_label: D25
data_type: string

tool: D28: w

tool: D27: ./.testbytes

tool: D25: ./.testbits

assistant: ```c
int main(void) {
  int i;
  FILE *fp;
  fp = fopen("./.testbytes", "w");
  if (!fp) {
    return -1;
  }
  for (i = 0; i < 255; i++) {
    fputc(i, fp);
  }
  fclose(fp);
  fp = fopen("./.testbits", "w");
  if (!fp) {
    return -1;
  }
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0xFF, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fputc(0x00, fp);
  fclose(fp);
}
```