user: Translate the below assembly code into C programming language:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %rsi,-0x20(%rbp)
  cmpl   $0x1,-0x14(%rbp)
  jne    L40
  mov    $0x1,%esi
  mov    $0x0,%edi
  call   <copy@plt>
  mov    $0x0,%eax
  jmp    L20
L40:
  cmpl   $0x2,-0x14(%rbp)
  jne    L38
  mov    D5(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <getFileDescriptor@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  mov    $0x1,%esi
  mov    %eax,%edi
  call   <copy@plt>
  mov    $0x0,%eax
  jmp    L20
L38:
  cmpl   $0x3,-0x14(%rbp)
  jne    L11
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  movzbl (%rax),%eax
  cmp    $0x2d,%al
  jne    L11
  mov    D133(%rip),%rax
  mov    (%rax),%edx
  mov    D176(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D0(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D62(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D170(%rip),%rax
  mov    (%rax),%ecx
  mov    D66(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%ecx
  mov    D179(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%ecx
  mov    -0x20(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <getFileDescriptor@plt>
  mov    %eax,-0x10(%rbp)
  mov    -0x10(%rbp),%eax
  mov    %eax,%esi
  mov    $0x0,%edi
  call   <copy@plt>
  mov    $0x0,%eax
  jmp    L20
L11:
  mov    D5(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <getFileDescriptor@plt>
  mov    %eax,-0xc(%rbp)
  mov    D133(%rip),%rax
  mov    (%rax),%edx
  mov    D176(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D0(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D62(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D170(%rip),%rax
  mov    (%rax),%ecx
  mov    D66(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%ecx
  mov    D179(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%ecx
  mov    -0x20(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <getFileDescriptor@plt>
  mov    %eax,-0x8(%rbp)
  mov    -0x8(%rbp),%edx
  mov    -0xc(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <copy@plt>
  mov    $0x0,%eax
L20:
  leave
  ret
```

assistant: ```c
int main(int argc, char *argv[]) {
  if (argc == 1) {
    copy(0, 1);
    return 0;
  }
  if (argc == 2) {
    int inputDesc = getFileDescriptor(argv[1], O_RDONLY, 0);
    copy(inputDesc, 1);
    return 0;
  }
  if (argc == 3 && argv[1][0] == '-') {
    int outputDesc = getFileDescriptor(argv[2], O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
    copy(0, outputDesc);
    return 0;
  }
  if (argc == 3 && argv[1][0], '-' && argv[2][0], '-') {
    int inputDesc = getFileDescriptor(argv[1], O_RDONLY, 0);
    int outputDesc = getFileDescriptor(argv[2], O_WRONLY | O_APPEND | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
    copy(inputDesc, outputDesc);
    return 0;
  }
}
```