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

```asm
<oct2dec>:
  endbr64
  push   %r15
  xor    %r15d,%r15d
  push   %r14
  mov    $0x1,%r14d
  push   %r13
  lea    D3(%rip),%r13
  push   %r12
  xor    %r12d,%r12d
  push   %rbp
  mov    %rsi,%rbp
  push   %rbx
  mov    %edi,%ebx
  sub    $0x18,%rsp
  mov    %rdx,0x8(%rsp)
  jmp    L149
  nopl   0x0(%rax)
L109:
  cmp    $0x72,%eax
  cmove  %r14d,%r12d
L149:
  mov    %r13,%rdx
  mov    %rbp,%rsi
  mov    %ebx,%edi
  call   <getopt@plt>
  cmp    $0xffffffff,%eax
  je     L90
  cmp    $0x68,%eax
  jne    L109
  mov    $0x1,%r15d
  jmp    L149
  xchg   %ax,%ax
L90:
  test   %r15d,%r15d
  jne    L121
  test   %r12d,%r12d
  je     L78
  cmp    $0x2,%ebx
  jg     L21
  mov    0x8(%rsp),%rdi
  call   <noArgument@plt>
  cmp    $0x2,%ebx
  jne    L39
L95:
  mov    $0x1,%r12d
  lea    D32(%rip),%r13
  nopl   0x0(%rax,%rax,1)
L36:
  mov    0x0(%rbp,%r12,8),%rdi
  mov    %r13,%rsi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L129
  mov    0x0(%rbp,%r12,8),%rdi
  mov    $0x8,%edx
  mov    $0xa,%esi
  call   <convertBase@plt>
L129:
  add    $0x1,%r12
  cmp    %r12d,%ebx
  jg     L36
L39:
  add    $0x18,%rsp
  lea    D27(%rip),%rdi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    10b0 <printf@plt>
  nopl   0x0(%rax)
L78:
  cmp    $0x1,%ebx
  jle    L93
  lea    D13(%rip),%rdi
  mov    $0x1,%r12d
  call   <printf@plt>
  nop
L57:
  mov    0x0(%rbp,%r12,8),%rdi
  mov    $0xa,%edx
  mov    $0x8,%esi
  add    $0x1,%r12
  call   <convertBase@plt>
  cmp    %r12d,%ebx
  jg     L57
  jmp    L39
  nop
L121:
  mov    0x8(%rsp),%rdi
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    10a0 <showUsage@plt>
  nopl   0x0(%rax,%rax,1)
L21:
  lea    D17(%rip),%rdi
  call   <printf@plt>
  jmp    L95
  nopl   0x0(%rax)
L93:
  mov    0x8(%rsp),%rdi
  call   <noArgument@plt>
  jmp    L39
```

tool_calls: name: unpack_data
arguments: data_tag: D3
data_type: string
name: unpack_data
arguments: data_tag: D32
data_type: string
name: unpack_data
arguments: data_tag: D27
data_type: string
name: unpack_data
arguments: data_tag: D13
data_type: string
name: unpack_data
arguments: data_tag: D17
data_type: string

tool: D3: rh

tool: D32: -r

tool: D27: 


tool: D13: DEC: 

tool: D17: OCT: 

assistant: ```c
void oct2dec(int argc, char **argv, char *applet) {
  int opt = 0;
  bool reverse = false;
  bool pr_help = false;
  while ((opt = getopt(argc, argv, "rh")) != -1) {
    switch (opt) {
    case 'r':
      reverse = true;
      break;
    case 'h':
      pr_help = true;
      break;
    }
  }
  if (!pr_help) {
    if (reverse) {
      if (argc > 2) {
        printf("OCT: ");
      } else {
        noArgument(applet);
      }
    } else {
      if (argc > 1) {
        printf("DEC: ");
      } else {
        noArgument(applet);
      }
    }
    for (int i = 1; i < argc; i++) {
      if (reverse) {
        if (strcmp(argv[i], "-r") == 0) {
          continue;
        }
        convertBase(argv[i], 10, 8);
      } else {
        convertBase(argv[i], 8, 10);
      }
    }
    printf("\n");
  } else {
    showUsage(applet);
  }
}
```