user: What is the c source code of the assembly code below?

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x10(%rbp)
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    %al,-0x9(%rbp)
  jmp    L312
L222:
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    %al,-0x9(%rbp)
  cmpl   $0x0,-0x10(%rbp)
  jne    L55
  movzbl -0xa(%rbp),%eax
  cmp    $0x2f,%al
  jne    L233
  movzbl -0x9(%rbp),%eax
  cmp    $0x2a,%al
  jne    L233
  movl   $0x1,-0x10(%rbp)
  jmp    L312
L233:
  movzbl -0xa(%rbp),%eax
  cmp    $0x2f,%al
  jne    L156
  movzbl -0x9(%rbp),%eax
  cmp    $0x2f,%al
  jne    L156
  movl   $0x3,-0x10(%rbp)
  jmp    L312
L156:
  movzbl -0xa(%rbp),%eax
  cmp    $0x22,%al
  jne    L6
  movl   $0x5,-0x10(%rbp)
  movzbl -0xa(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  jmp    L312
L6:
  movzbl -0xa(%rbp),%eax
  cmp    $0x27,%al
  jne    L81
  movl   $0x4,-0x10(%rbp)
  movzbl -0xa(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  jmp    L312
L81:
  movzbl -0xa(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  jmp    L312
L55:
  cmpl   $0x5,-0x10(%rbp)
  jne    L253
  movzbl -0xa(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  movzbl -0xa(%rbp),%eax
  cmp    $0x5c,%al
  jne    L237
  movl   $0x6,-0x10(%rbp)
  jmp    L312
L237:
  movzbl -0xa(%rbp),%eax
  cmp    $0x22,%al
  jne    L312
  movl   $0x0,-0x10(%rbp)
  jmp    L312
L253:
  cmpl   $0x4,-0x10(%rbp)
  jne    L181
  movzbl -0xa(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  movzbl -0xa(%rbp),%eax
  cmp    $0x5c,%al
  jne    L20
  movl   $0x7,-0x10(%rbp)
  jmp    L312
L20:
  movzbl -0xa(%rbp),%eax
  cmp    $0x27,%al
  jne    L312
  movl   $0x0,-0x10(%rbp)
  jmp    L312
L181:
  cmpl   $0x1,-0x10(%rbp)
  jne    L100
  movzbl -0xa(%rbp),%eax
  cmp    $0x2a,%al
  jne    L100
  movzbl -0x9(%rbp),%eax
  cmp    $0x2f,%al
  jne    L100
  movl   $0x2,-0x10(%rbp)
  jmp    L312
L100:
  cmpl   $0x2,-0x10(%rbp)
  jne    L112
  movl   $0x0,-0x10(%rbp)
  jmp    L312
L112:
  cmpl   $0x3,-0x10(%rbp)
  jne    L216
  movzbl -0xa(%rbp),%eax
  cmp    $0xa,%al
  jne    L216
  movl   $0x0,-0x10(%rbp)
  jmp    L312
L216:
  cmpl   $0x6,-0x10(%rbp)
  jne    L80
  movl   $0x5,-0x10(%rbp)
  movzbl -0xa(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
  jmp    L312
L80:
  cmpl   $0x7,-0x10(%rbp)
  jne    L312
  movl   $0x4,-0x10(%rbp)
  movzbl -0xa(%rbp),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <putchar@plt>
L312:
  movzbl -0x9(%rbp),%eax
  mov    %al,-0xa(%rbp)
  movzbl -0xa(%rbp),%edx
  mov    D2(%rip),%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  jne    L222
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L109
  call   <__stack_chk_fail@plt>
L109:
  leave
  ret
```

assistant: ```c
int main() {
  char buf[2];
  int state;
  state = 0;
  buf[1] = getchar();
  while ((buf[0] = buf[1]) != EOF) {
    buf[1] = getchar();
    if (state == 0) {
      if (buf[0] == '/' && buf[1] == '*') {
        state = 1;
      } else if (buf[0] == '/' && buf[1] == '/') {
        state = 3;
      } else if (buf[0] == '"') {
        state = 5;
        putchar(buf[0]);
      } else if (buf[0] == '\'') {
        state = 4;
        putchar(buf[0]);
      } else {
        putchar(buf[0]);
      }
    } else if (state == 5) {
      putchar(buf[0]);
      if (buf[0] == '\\')
        state = 6;
      else if (buf[0] == '"')
        state = 0;
    } else if (state == 4) {
      putchar(buf[0]);
      if (buf[0] == '\\')
        state = 7;
      else if (buf[0] == '\'')
        state = 0;
    } else if (state == 1 && buf[0] == '*' && buf[1] == '/') {
      state = 2;
    } else if (state == 2) {
      state = 0;
    } else if (state == 3 && buf[0] == '\n') {
      state = 0;
    } else if (state == 6) {
      state = 5;
      putchar(buf[0]);
    } else if (state == 7) {
      state = 4;
      putchar(buf[0]);
    }
  }
}
```