user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<showHelp>:
  endbr64
  sub    $0x8,%rsp
  lea    D134(%rip),%rdi
  call   <printf@plt>
  lea    D54(%rip),%rdi
  call   <printf@plt>
  lea    D79(%rip),%rdi
  call   <printf@plt>
  lea    D86(%rip),%rdi
  call   <printf@plt>
  lea    D72(%rip),%rdi
  call   <printf@plt>
  lea    D112(%rip),%rdi
  call   <printf@plt>
  lea    D87(%rip),%rdi
  call   <printf@plt>
  lea    D83(%rip),%rdi
  call   <printf@plt>
  lea    D61(%rip),%rdi
  call   <printf@plt>
  lea    D77(%rip),%rdi
  call   <printf@plt>
  lea    D110(%rip),%rdi
  call   <printf@plt>
  lea    D64(%rip),%rdi
  call   <printf@plt>
  lea    D21(%rip),%rdi
  call   <printf@plt>
  lea    D85(%rip),%rdi
  call   <printf@plt>
  xor    %eax,%eax
  add    $0x8,%rsp
  ret
```

tool_calls: name: unpack_data
arguments: data_label: D134
type_guessed: string
name: unpack_data
arguments: data_label: D54
type_guessed: string
name: unpack_data
arguments: data_label: D79
type_guessed: string
name: unpack_data
arguments: data_label: D86
type_guessed: string
name: unpack_data
arguments: data_label: D72
type_guessed: string
name: unpack_data
arguments: data_label: D112
type_guessed: string
name: unpack_data
arguments: data_label: D87
type_guessed: string
name: unpack_data
arguments: data_label: D83
type_guessed: string
name: unpack_data
arguments: data_label: D61
type_guessed: string
name: unpack_data
arguments: data_label: D77
type_guessed: string
name: unpack_data
arguments: data_label: D110
type_guessed: string
name: unpack_data
arguments: data_label: D64
type_guessed: string
name: unpack_data
arguments: data_label: D21
type_guessed: string
name: unpack_data
arguments: data_label: D85
type_guessed: string

tool: D134: 
Usage: <subcommand> [options]


tool: D54: A user interface that can be used to properly configure the router parameters.



tool: D79: Subcommands:


tool: D86:   help      show this message


tool: D72:   quit      stop this router and quit


tool: D112:   showlsdb  show link state database


tool: D87:   showrt    show routing table


tool: D83:   showcfg   show router configuration


tool: D61:   enablelink <ethx> 


tool: D77:             to enable the specified link by setting ethx[ethx].link_availability = 1


tool: D110:             <ethx> could be 0, 1, ... e.g.: 'enablelink 1' will enable eth1


tool: D64:   disablelink <ethx> 


tool: D21:             to disable the specified link by setting ethx[ethx].link_availability = 0


tool: D85:             <ethx> could be 0, 1, ... e.g.: 'disablelink 1' will disable eth1



assistant: ```c
int showHelp() {
  printf("\nUsage: <subcommand> [options]\n");
  printf("A user interface that can be used to properly configure the router parameters.\n\n");
  printf("Subcommands:\n");
  printf("  help      show this message\n");
  printf("  quit      stop this router and quit\n");
  printf("  showlsdb  show link state database\n");
  printf("  showrt    show routing table\n");
  printf("  showcfg   show router configuration\n");
  printf("  enablelink <ethx> \n");
  printf("            to enable the specified link by setting ethx[ethx].link_availability = 1\n");
  printf("            <ethx> could be 0, 1, ... e.g.: 'enablelink 1' will enable eth1\n");
  printf("  disablelink <ethx> \n");
  printf("            to disable the specified link by setting ethx[ethx].link_availability = 0\n");
  printf("            <ethx> could be 0, 1, ... e.g.: 'disablelink 1' will disable eth1\n\n");
  return 0;
}
```