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

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0xd0,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    D23(%rip),%rax
  mov    %rax,%rsi
  lea    D34(%rip),%rax
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0xc8(%rbp)
  lea    D23(%rip),%rax
  mov    %rax,%rsi
  lea    D41(%rip),%rax
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0xc0(%rbp)
  lea    D13(%rip),%rax
  mov    %rax,%rsi
  lea    D2(%rip),%rax
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0xb8(%rbp)
  mov    $0x0,%eax
  call   <initialize@plt>
  jmp    L78
L26:
  mov    -0xc8(%rbp),%rdx
  lea    -0xb0(%rbp),%rax
  mov    $0x50,%esi
  mov    %rax,%rdi
  call   <fgets@plt>
  mov    -0xc0(%rbp),%rdx
  lea    -0x60(%rbp),%rax
  mov    $0x50,%esi
  mov    %rax,%rdi
  call   <fgets@plt>
  movl   $0x0,-0xcc(%rbp)
  jmp    L24
L45:
  mov    -0xcc(%rbp),%eax
  cltq
  movzbl -0xb0(%rbp,%rax,1),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <decifrar@plt>
  mov    %al,-0xcd(%rbp)
  movsbl -0xcd(%rbp),%eax
  mov    -0xb8(%rbp),%rdx
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <fputc@plt>
  addl   $0x1,-0xcc(%rbp)
L24:
  mov    -0xcc(%rbp),%eax
  cmp    $0x4f,%eax
  jbe    L45
  mov    -0xb8(%rbp),%rax
  mov    %rax,%rsi
  mov    $0xa,%edi
  call   <fputc@plt>
  movl   $0x0,-0xcc(%rbp)
  jmp    L28
L66:
  mov    -0xcc(%rbp),%eax
  cltq
  movzbl -0x60(%rbp,%rax,1),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <decifrar@plt>
  mov    %al,-0xce(%rbp)
  movsbl -0xce(%rbp),%eax
  mov    -0xb8(%rbp),%rdx
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <fputc@plt>
  addl   $0x1,-0xcc(%rbp)
L28:
  mov    -0xcc(%rbp),%eax
  cmp    $0x4f,%eax
  jbe    L66
  mov    -0xb8(%rbp),%rax
  mov    %rax,%rsi
  mov    $0xa,%edi
  call   <fputc@plt>
L78:
  mov    -0xc8(%rbp),%rax
  mov    %rax,%rdi
  call   <feof@plt>
  test   %eax,%eax
  jne    L52
  mov    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <feof@plt>
  test   %eax,%eax
  je     L26
L52:
  mov    -0xc8(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  mov    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  mov    -0xb8(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  mov    $0x0,%edi
  call   <exit@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L32
  call   <__stack_chk_fail@plt>
L32:
  leave
  ret
```

tool_calls: name: read_data
arguments: data_label: D23
datatype: string
name: read_data
arguments: data_label: D34
datatype: string
name: read_data
arguments: data_label: D41
datatype: string
name: read_data
arguments: data_label: D13
datatype: string
name: read_data
arguments: data_label: D2
datatype: string

tool: D23: r+

tool: D34: filein1.bin

tool: D41: filein2.bin

tool: D13: w+

tool: D2: fileout.txt

assistant: ```c
int main() {
  FILE *file1 = fopen("filein1.bin", "r+");
  FILE *file2 = fopen("filein2.bin", "r+");
  FILE *fileout = fopen("fileout.txt", "w+");
  char line[80], line2[80];
  int i, ret, ret2;
  initialize();
  while (!feof(file1) && !feof(file2)) {
    fgets(line, sizeof(line), file1);
    fgets(line2, sizeof(line2), file2);
    for (i = 0; i < sizeof(line); i++) {
      char letter = decifrar(line[i]);
      fprintf(fileout, "%c", letter);
    }
    fprintf(fileout, "\n");
    for (i = 0; i < sizeof(line2); i++) {
      char letter2 = decifrar(line2[i]);
      fprintf(fileout, "%c", letter2);
    }
    fprintf(fileout, "\n");
  }
  fclose(file1);
  fclose(file2);
  fclose(fileout);
  exit(0);
}
```