user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<declare_variables>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    D16(%rip),%rbx
  mov    %rbx,%rsi
  lea    D70(%rip),%rdi
  call   <fopen@plt>
  mov    %rax,%r12
  movl   $0xa,0xc(%rsp)
  movq   $0x0,0x10(%rsp)
  lea    D29(%rip),%rsi
  lea    D64(%rip),%rdi
  call   <fopen@plt>
  mov    %rax,%rbp
  mov    %rax,%rcx
  mov    $0xc,%edx
  mov    $0x1,%esi
  lea    D51(%rip),%rdi
  call   <fwrite@plt>
  mov    %rbx,%rsi
  lea    D68(%rip),%rdi
  call   <fopen@plt>
  mov    %rax,%r13
  lea    0xc(%rsp),%rsi
  lea    0x10(%rsp),%rdi
  mov    %rax,%rdx
  call   <getline@plt>
  mov    %eax,%ebx
  mov    0x10(%rsp),%rdi
  call   <strlen@plt>
  cltq
  mov    0x10(%rsp),%rdx
  movb   $0x0,-0x1(%rdx,%rax,1)
  cmp    $0xffffffff,%ebx
  je     L41
  lea    D95(%rip),%r14
L33:
  mov    0x10(%rsp),%rdx
  mov    %r14,%rsi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <fprintf@plt>
  lea    0xc(%rsp),%rsi
  lea    0x10(%rsp),%rdi
  mov    %r13,%rdx
  call   <getline@plt>
  mov    %eax,%ebx
  mov    0x10(%rsp),%rdi
  call   <strlen@plt>
  cltq
  mov    0x10(%rsp),%rdx
  movb   $0x0,-0x1(%rdx,%rax,1)
  cmp    $0xffffffff,%ebx
  jne    L33
L41:
  mov    %r13,%rdi
  call   <fclose@plt>
  mov    %rbp,%rcx
  mov    $0x8,%edx
  mov    $0x1,%esi
  lea    D66(%rip),%rdi
  call   <fwrite@plt>
  lea    0xc(%rsp),%rsi
  lea    0x10(%rsp),%rdi
  mov    %r12,%rdx
  call   <getline@plt>
  cmp    $0xffffffff,%eax
  je     L20
  lea    D98(%rip),%rbx
L28:
  mov    0x10(%rsp),%rdx
  mov    %rbx,%rsi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <fprintf@plt>
  lea    0xc(%rsp),%rsi
  lea    0x10(%rsp),%rdi
  mov    %r12,%rdx
  call   <getline@plt>
  cmp    $0xffffffff,%eax
  jne    L28
L20:
  mov    %rbp,%rcx
  mov    $0x4,%edx
  mov    $0x1,%esi
  lea    D42(%rip),%rdi
  call   <fwrite@plt>
  mov    %r12,%rdi
  call   <fclose@plt>
  mov    %rbp,%rdi
  call   <fclose@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L29
  add    $0x20,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L29:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_label: D16
type_guessed: string
name: disassemble_data
arguments: data_label: D70
type_guessed: string
name: disassemble_data
arguments: data_label: D29
type_guessed: string
name: disassemble_data
arguments: data_label: D64
type_guessed: string
name: disassemble_data
arguments: data_label: D51
type_guessed: string
name: disassemble_data
arguments: data_label: D68
type_guessed: string
name: disassemble_data
arguments: data_label: D95
type_guessed: string
name: disassemble_data
arguments: data_label: D66
type_guessed: string
name: disassemble_data
arguments: data_label: D98
type_guessed: string
name: disassemble_data
arguments: data_label: D42
type_guessed: string

tool: D16: r

tool: D70: 8086.txt

tool: D29: w

tool: D64: output.txt

tool: D51: jmp start 



tool: D68: variables.txt

tool: D95: %s db 0


tool: D66: start:  

tool: D98: %s


tool: D42: ret


assistant: ```c
void declare_variables() {
  FILE *fin = fopen("8086.txt", "r");
  int nbytes = 10;
  char *line = NULL;
  FILE *fout = fopen("output.txt", "w");
  fprintf(fout, "jmp start \n\n");
  FILE *var = fopen("variables.txt", "r");
  int a = getline(&line, &nbytes, var);
  int len = strlen(line);
  line[len - 1] = '\0';
  while (a != -1) {
    fprintf(fout, "%s db 0\n", line);
    a = getline(&line, &nbytes, var);
    int len = strlen(line);
    line[len - 1] = '\0';
  }
  fclose(var);
  fprintf(fout, "start:  ");
  a = getline(&line, &nbytes, fin);
  while (a != -1) {
    fprintf(fout, "%s\n", line);
    a = getline(&line, &nbytes, fin);
  }
  fprintf(fout, "ret\n");
  fclose(fin);
  fclose(fout);
  return;
}
```