user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<get_rowcol>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %ecx,%eax
  mov    %al,-0x3c(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <cgc_strlen@plt>
  cmp    $0x1,%eax
  jg     L217
  mov    $0xffffffff,%eax
  jmp    L206
L217:
  movq   $0x0,-0x10(%rbp)
  movq   $0x0,-0x8(%rbp)
  mov    -0x28(%rbp),%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <toupper@plt>
  mov    %al,-0x11(%rbp)
  cmpb   $0x40,-0x11(%rbp)
  jle    L224
  cmpb   $0x5a,-0x11(%rbp)
  jle    L132
L224:
  mov    $0xffffffff,%eax
  jmp    L206
L132:
  mov    -0x30(%rbp),%rax
  movzbl -0x11(%rbp),%edx
  mov    %dl,(%rax)
  mov    -0x28(%rbp),%rax
  add    $0x1,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  mov    %eax,%edi
  call   <toupper@plt>
  mov    %al,-0x11(%rbp)
  cmpb   $0x40,-0x11(%rbp)
  jle    L209
  cmpb   $0x5a,-0x11(%rbp)
  jle    L158
L209:
  cmpb   $0x2f,-0x11(%rbp)
  jle    L59
  cmpb   $0x39,-0x11(%rbp)
  jle    L158
L59:
  mov    $0xffffffff,%eax
  jmp    L206
L158:
  cmpb   $0x2f,-0x11(%rbp)
  jle    L87
  cmpb   $0x39,-0x11(%rbp)
  jg     L87
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  mov    -0x38(%rbp),%rdx
  add    %rax,%rdx
  movzbl -0x11(%rbp),%eax
  mov    %al,(%rdx)
  mov    -0x30(%rbp),%rax
  add    $0x1,%rax
  movb   $0x0,(%rax)
  jmp    L148
L87:
  mov    -0x30(%rbp),%rax
  lea    0x1(%rax),%rdx
  movzbl -0x11(%rbp),%eax
  mov    %al,(%rdx)
  mov    -0x30(%rbp),%rax
  add    $0x2,%rax
  movb   $0x0,(%rax)
L148:
  movq   $0x2,-0x10(%rbp)
  jmp    L38
L200:
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    %al,-0x3c(%rbp)
  jne    L181
  cmpq   $0x0,-0x8(%rbp)
  je     L181
  mov    -0x38(%rbp),%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    $0x0,%eax
  jmp    L206
L181:
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x2f,%al
  jle    L161
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x39,%al
  jg     L161
  cmpq   $0x1,-0x8(%rbp)
  ja     L161
  mov    -0x28(%rbp),%rdx
  mov    -0x10(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x8(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  mov    -0x38(%rbp),%rdx
  add    %rax,%rdx
  movzbl (%rcx),%eax
  mov    %al,(%rdx)
  addq   $0x1,-0x10(%rbp)
  jmp    L38
L161:
  mov    $0xffffffff,%eax
  jmp    L206
L38:
  cmpq   $0x4,-0x10(%rbp)
  jbe    L200
  mov    $0xffffffff,%eax
L206:
  leave
  ret
```

assistant: ```c
int get_rowcol(char *input, char *row, char *col, char delim) {
  if (cgc_strlen(input) < 2)
    return -1;
  size_t i = 0, is_num = 0;
  char c = toupper(input[0]);
  if (c < 'A' || c > 'Z')
    return -1;
  row[0] = c;
  c = toupper(input[1]);
  if (!(c >= 'A' && c <= 'Z') && !(c >= '0' && c <= '9'))
    return -1;
  if (c >= '0' && c <= '9') {
    col[is_num++] = c;
    row[1] = '\0';
  } else {
    row[1] = c;
    row[2] = '\0';
  }
  for (i = 2; i < 5; i++) {
    if (input[i] == delim && is_num) {
      col[is_num] = '\0';
      return 0;
    }
    if (input[i] >= '0' && input[i] <= '9' && is_num < 2) {
      col[is_num++] = input[i];
    } else {
      return -1;
    }
  }
  return -1;
}
```