user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<main>:
  endbr64
  push   %r15
  lea    D10(%rip),%rdi
  push   %r14
  push   %r13
  xor    %r13d,%r13d
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x268,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x258(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbp
  mov    %rbp,%r12
  call   <printf@plt>
  mov    %rsp,%rdi
  mov    $0x4b,%ecx
  xor    %eax,%eax
  rep stos %rax,%es:(%rdi)
  nopw   0x0(%rax,%rax,1)
L139:
  xor    %eax,%eax
  xor    %r14d,%r14d
  call   <getchar@plt>
  mov    %eax,%ebx
  jmp    L27
  xchg   %ax,%ax
L74:
  cmp    $0x14,%r14
  je     L54
  mov    %bl,(%r12,%r14,1)
  xor    %eax,%eax
  add    $0x1,%r14
  call   <getchar@plt>
  mov    %eax,%ebx
L27:
  movsbl %bl,%edi
  movslq %r14d,%r15
  call   <isNotWhiteSpace@plt>
  test   %rax,%rax
  jne    L74
L122:
  movslq %r13d,%r14
  add    $0x14,%r12
  add    $0x1,%r13d
  lea    (%r14,%r14,4),%rax
  lea    0x260(%rsp,%rax,4),%rax
  movb   $0x0,-0x260(%r15,%rax,1)
  cmp    $0xa,%bl
  je     L101
  cmp    $0x1d,%r13d
  jle    L139
L101:
  xor    %eax,%eax
  mov    %r13d,%esi
  lea    D3(%rip),%rdi
  call   <printf@plt>
  mov    %r13d,%r10d
  sar    %r10d
  je     L88
  movslq %r10d,%r10
  movslq %r13d,%r13
  lea    0x14(%rbp),%rbx
  xor    %r8d,%r8d
  imul   $0xffffffffffffffec,%r10,%r10
  lea    0x0(%r13,%r13,4),%rax
  mov    %rbx,%r9
  lea    -0x14(,%rax,4),%rcx
  nopl   0x0(%rax)
L51:
  lea    -0x14(%r9),%rax
  nopl   0x0(%rax)
L103:
  lea    (%rax,%r8,1),%rdx
  movzbl (%rax),%esi
  add    $0x1,%rax
  movzbl (%rdx,%rcx,1),%edi
  mov    %dil,-0x1(%rax)
  mov    %sil,(%rdx,%rcx,1)
  cmp    %r9,%rax
  jne    L103
  sub    $0x14,%r8
  sub    $0x14,%rcx
  add    $0x14,%r9
  cmp    %r10,%r8
  jne    L51
L50:
  lea    (%r14,%r14,4),%rax
  lea    (%rbx,%rax,4),%r12
  jmp    L26
  nopw   0x0(%rax,%rax,1)
L21:
  call   <putchar@plt>
  add    $0x1,%rbp
L26:
  movsbl 0x0(%rbp),%edi
  test   %dil,%dil
  jne    L21
  mov    $0xa,%edi
  mov    %rbx,%rbp
  call   <putchar@plt>
  cmp    %r12,%rbx
  je     L108
  add    $0x14,%rbx
  jmp    L26
  nopw   0x0(%rax,%rax,1)
L54:
  mov    $0x14,%r15d
  jmp    L122
L108:
  mov    0x258(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L7
  add    $0x268,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L88:
  lea    0x14(%rbp),%rbx
  jmp    L50
L7:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_label: D10
type: string
name: retrieve_data
arguments: data_label: D3
type: string

tool: D10: Enter a sentense: 

tool: D3: iMax = %d


assistant: ```c
int main(void) {
  printf("Enter a sentense: ");
  char str[30][20] = {0};
  int i = 0;
  int j = 0;
  char ch = -1;
  char mark = 0;
  for (i = 0; ch != '\n' && i < 30; i++) {
    for (j = 0, ch = getchar(); isNotWhiteSpace(ch) && j < 20; j++) {
      str[i][j] = ch;
      ch = getchar();
    }
    str[i][j] = '\0';
  }
  int iMax = i;
  printf("iMax = %d\n", iMax);
  for (i = 0; i < iMax / 2; i++) {
    char temp = 0;
    for (j = 0; j < 20; j++) {
      temp = str[i][j];
      str[i][j] = str[iMax - i - 1][j];
      str[iMax - i - 1][j] = temp;
    }
  }
  for (i = 0; i < iMax; i++) {
    for (j = 0; str[i][j] != '\0'; j++) {
      printf("%c", str[i][j]);
    }
    printf("\n");
  }
  return 0;
}
```