user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %r14
  lea    D21(%rip),%r14
  push   %r13
  lea    D68(%rip),%r13
  mov    %r14,%rsi
  push   %r12
  mov    %r13,%rdi
  push   %rbp
  sub    $0x408,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x3f8(%rsp)
  xor    %eax,%eax
  call   <fopen@plt>
  lea    D28(%rip),%rsi
  lea    D70(%rip),%rdi
  mov    %rax,%rbp
  call   <fopen@plt>
  test   %rbp,%rbp
  je     L15
  mov    %rax,%r12
  test   %rax,%rax
  je     L10
  lea    D43(%rip),%rdi
  call   <puts@plt>
  jmp    L40
  nopw   0x0(%rax,%rax,1)
L66:
  mov    %rbp,%rdi
  call   <fgetc@plt>
  movsbl %al,%edi
  call   <putchar@plt>
L40:
  mov    %rbp,%rdi
  call   <feof@plt>
  test   %eax,%eax
  je     L66
  mov    %r12,%rsi
  mov    %rbp,%rdi
  call   <copiar@plt>
  mov    %rbp,%rdi
  mov    %rsp,%rbp
  call   <fclose@plt>
  mov    %r14,%rsi
  mov    %r13,%rdi
  lea    D81(%rip),%r14
  call   <fopen@plt>
  lea    D33(%rip),%rdi
  mov    %rax,%r13
  call   <puts@plt>
  jmp    L62
  nopl   (%rax)
L58:
  mov    %rbp,%rsi
  mov    %r14,%rdi
  xor    %eax,%eax
  call   <printf@plt>
L62:
  mov    %r13,%rdx
  mov    $0x3e9,%esi
  mov    %rbp,%rdi
  call   <fgets@plt>
  test   %rax,%rax
  jne    L58
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    %r13,%rdi
  call   <fclose@plt>
  mov    %r12,%rdi
  call   <fclose@plt>
  lea    D76(%rip),%rdi
  call   <system@plt>
L29:
  mov    0x3f8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L56
  add    $0x408,%rsp
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
L10:
  lea    D100(%rip),%rdi
  call   <puts@plt>
  lea    D76(%rip),%rdi
  call   <system@plt>
  jmp    L29
L15:
  lea    D62(%rip),%rdi
  call   <puts@plt>
  lea    D76(%rip),%rdi
  call   <system@plt>
  jmp    L29
L56:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_label: D21
type_infered: string
name: read_data
arguments: data_label: D68
type_infered: string
name: read_data
arguments: data_label: D28
type_infered: string
name: read_data
arguments: data_label: D70
type_infered: string
name: read_data
arguments: data_label: D43
type_infered: string
name: read_data
arguments: data_label: D81
type_infered: string
name: read_data
arguments: data_label: D33
type_infered: string
name: read_data
arguments: data_label: D76
type_infered: string
name: read_data
arguments: data_label: D100
type_infered: string
name: read_data
arguments: data_label: D62
type_infered: string

tool: D21: r

tool: D68: input.txt

tool: D28: w

tool: D70: output.txt

tool: D43: 	Texto presente no arquivo A.txt:


tool: D81: %s

tool: D33: 

	Texto copiado para o arquivo B.txt:


tool: D76: pause

tool: D100: 
Erro na abertura do arquivo B!!!


tool: D62: 
Erro na abertura do arquivo A!!!


assistant: ```c
int main() {
  FILE *tx, *tx2;
  char c, texto[1001];
  tx = fopen("input.txt", "r");
  tx2 = fopen("output.txt", "w");
  if (!tx) {
    printf("\nErro na abertura do arquivo A!!!\n\n");
    system("pause");
    return (0);
  }
  if (!tx2) {
    printf("\nErro na abertura do arquivo B!!!\n\n");
    system("pause");
    return (0);
  }
  printf("\tTexto presente no arquivo A.txt:\n\n");
  while (!feof(tx)) {
    c = fgetc(tx);
    printf("%c", c);
  }
  copiar(tx, tx2);
  fclose(tx);
  tx = fopen("input.txt", "r");
  printf("\n\n\tTexto copiado para o arquivo B.txt:\n\n");
  while (fgets(texto, 1001, tx) != NULL)
    printf("%s", texto);
  printf("\n");
  fclose(tx);
  fclose(tx2);
  system("pause");
  return (0);
}
```