user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<main>:
  endbr64
  push   %r15
  xor    %edx,%edx
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x68,%rsp
  mov    D7(%rip),%r13
  mov    %fs:0x28,%rax
  mov    %rax,0x58(%rsp)
  xor    %eax,%eax
  movl   $0x0,0x4(%rsp)
  lea    0x4(%rsp),%rbp
  movl   $0x0,0x8(%rsp)
  movl   $0x0,0xc(%rsp)
  nopl   0x0(%rax,%rax,1)
L2:
  cmp    %edx,%eax
  je     L269
  nopl   0x0(%rax)
L242:
  cltq
  movzbl 0x10(%rsp,%rax,1),%eax
  lea    -0x9(%rax),%edx
  cmp    $0x1,%dl
  jbe    L21
  cmp    $0x20,%al
  jne    L177
L21:
  mov    %rbp,%rdi
  call   <inc@plt>
  mov    0x4(%rsp),%eax
  cmp    0x8(%rsp),%eax
  jne    L242
L269:
  xor    %eax,%eax
  call   <getchar@plt>
  cmp    %eax,0x0(%r13)
  je     L74
  xchg   %ax,%ax
L140:
  cmp    $0xa,%eax
  jg     L37
  cmp    $0x8,%eax
  jg     L269
L66:
  movslq 0x4(%rsp),%rdx
  lea    0x8(%rsp),%rdi
  mov    %al,0x10(%rsp,%rdx,1)
  call   <inc@plt>
L177:
  mov    0x8(%rsp),%eax
  lea    0x8(%rsp),%r15
  lea    0x3c(%rax),%edx
  movslq %edx,%rax
  mov    %edx,%ecx
  imul   $0x4325c53f,%rax,%rax
  sar    $0x1f,%ecx
  sar    $0x24,%rax
  sub    %ecx,%eax
  imul   $0x3d,%eax,%eax
  sub    %eax,%edx
  mov    %edx,0xc(%rsp)
L41:
  movslq 0x4(%rsp),%rax
  xor    %r12d,%r12d
  movzbl 0x10(%rsp,%rax,1),%r14d
  jmp    L265
  nopl   0x0(%rax,%rax,1)
L115:
  lea    -0x9(%rax),%eax
  cmp    $0x1,%eax
  jbe    L179
  cmp    $0x20,%ebx
  je     L179
  movslq 0x8(%rsp),%rax
  mov    %eax,0xc(%rsp)
  xchg   %ax,%ax
L180:
  mov    %r15,%rdi
  mov    %bl,0x10(%rsp,%rax,1)
  call   <inc@plt>
  cmp    0x4(%rsp),%eax
  je     L44
L265:
  xor    %eax,%eax
  call   <getchar@plt>
  mov    0x0(%r13),%edx
  mov    %eax,%ebx
  cmp    %eax,%edx
  je     L74
  test   %r12d,%r12d
  je     L115
  cmp    $0x20,%r14b
  je     L126
  cmp    $0x9,%r14b
  je     L126
  lea    -0x9(%rbx),%ecx
  movslq 0x8(%rsp),%rax
  cmp    $0x1,%ecx
  jbe    L171
  cmp    $0x20,%ebx
  jne    L180
L171:
  add    $0x3c,%eax
  movslq %eax,%rcx
  mov    %eax,%esi
  imul   $0x4325c53f,%rcx,%rcx
  sar    $0x1f,%esi
  sar    $0x24,%rcx
  sub    %esi,%ecx
  imul   $0x3d,%ecx,%ecx
  sub    %ecx,%eax
  mov    %eax,0xc(%rsp)
L126:
  cmp    $0xa,%ebx
  je     L86
L267:
  movslq 0x8(%rsp),%rax
  jmp    L180
  nopl   0x0(%rax,%rax,1)
L179:
  cmp    $0x20,%r14b
  setne  %al
  xor    %r12d,%r12d
  cmp    $0x9,%r14b
  setne  %r12b
  and    %eax,%r12d
  cmp    $0xa,%ebx
  jne    L267
L86:
  cmp    %edx,%ebx
  je     L74
  test   %r12d,%r12d
  jne    L165
  mov    0xc(%rsp),%eax
  add    $0x3b,%eax
  movslq %eax,%rbx
  cltd
  imul   $0x4325c53f,%rbx,%rbx
  sar    $0x24,%rbx
  sub    %edx,%ebx
  imul   $0x3d,%ebx,%edx
  sub    %edx,%eax
  mov    %eax,%ebx
  nopw   0x0(%rax,%rax,1)
L62:
  movslq 0x4(%rsp),%rax
  movsbl 0x10(%rsp,%rax,1),%edi
  call   <putchar@plt>
  mov    %rbp,%rdi
  call   <inc@plt>
  cmp    %ebx,%eax
  jne    L62
  mov    $0x2d,%edi
  call   <putchar@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  jmp    L41
  nopl   0x0(%rax)
L37:
  cmp    $0x20,%eax
  jne    L66
  xor    %eax,%eax
  call   <getchar@plt>
  cmp    %eax,0x0(%r13)
  jne    L140
  nopw   0x0(%rax,%rax,1)
L74:
  mov    0x58(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L158
  add    $0x68,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L165:
  lea    0xc(%rsp),%rdi
  call   <inc@plt>
  nopw   0x0(%rax,%rax,1)
L120:
  movslq 0x4(%rsp),%rax
  movsbl 0x10(%rsp,%rax,1),%edi
  call   <putchar@plt>
  mov    %rbp,%rdi
  call   <inc@plt>
  cmp    0xc(%rsp),%eax
  jne    L120
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    0x8(%rsp),%edx
  mov    0x4(%rsp),%eax
  jmp    L2
  nopl   0x0(%rax)
L44:
  mov    0x0(%r13),%edx
  jmp    L86
L158:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int main() {
  char buffer[60 + 1];
  int c;
  int print_i = 0;
  int scan_i = 0;
  int char_i = 0;
  int state = 0;
  while (state != 5) {
    switch (state) {
    case 0:
      while (print_i != scan_i && (buffer[print_i] == ' ' || buffer[print_i] == '\t' || buffer[print_i] == '\n'))
        inc(&print_i);
      if (print_i == scan_i) {
        while ((c = getchar()) != EOF && (c == ' ' || c == '\t' || c == '\n'))
          ;
        if (c == EOF) {
          state = 5;
          break;
        }
        buffer[print_i] = c;
        inc(&scan_i);
      }
      char_i = (scan_i - 1 + 60 + 1) % (60 + 1);
      state = 1;
      break;
    case 1: {
      int first_word_found = 0;
      char prev_c = buffer[print_i];
      do {
        c = getchar();
        if (c == EOF)
          break;
        if (!first_word_found) {
          if (c != ' ' && c != '\t' && c != '\n')
            char_i = scan_i;
          else if (prev_c != ' ' && prev_c != '\t')
            first_word_found = 1;
        } else if (prev_c != ' ' && prev_c != '\t' && (c == ' ' || c == '\t' || c == '\n'))
          char_i = (scan_i - 1 + 60 + 1) % (60 + 1);
        if (c == '\n')
          break;
        buffer[scan_i] = c;
      } while (inc(&scan_i) != print_i);
      if (c == EOF)
        state = 5;
      else if (!first_word_found)
        state = 2;
      else
        state = 3;
      break;
    }
    case 2: {
      int end_i = (char_i - 2 + 60 + 1) % (60 + 1);
      do
        putchar(buffer[print_i]);
      while (inc(&print_i) != end_i);
      putchar('-');
      putchar('\n');
      state = 1;
      break;
    }
    case 3:
      inc(&char_i);
      do
        putchar(buffer[print_i]);
      while (inc(&print_i) != char_i);
      putchar('\n');
      state = 0;
      break;
    case 4:
      inc(&char_i);
      do
        putchar(buffer[print_i]);
      while (inc(&print_i) != scan_i);
      putchar('\n');
      state = 5;
      break;
    default:
      printf("Error! non-existent state.\n");
      return 1;
    }
  }
  return 0;
}
```