user: Demonstrate the C code that generates the assembly output below:

```asm
<fold_dotstream>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x18(%rbp)
  mov    %esi,-0x1c(%rbp)
  mov    %edx,-0x20(%rbp)
  mov    %rcx,-0x28(%rbp)
  movl   $0x0,-0x4(%rbp)
  mov    -0x20(%rbp),%eax
  and    $0x1,%eax
  test   %eax,%eax
  je     L69
  movl   $0x0,-0x8(%rbp)
  jmp    L131
L57:
  movl   $0x0,-0xc(%rbp)
  jmp    L50
L132:
  mov    -0xc(%rbp),%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  and    $0x1,%eax
  test   %eax,%eax
  jne    L129
  mov    -0x20(%rbp),%ecx
  mov    -0x1c(%rbp),%edx
  mov    -0x8(%rbp),%esi
  mov    -0xc(%rbp),%eax
  mov    %eax,%edi
  call   <is_corner@plt>
  test   %rax,%rax
  je     L14
  mov    -0x8(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movb   $0x43,(%rax)
  jmp    L18
L14:
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x20(%rbp),%eax
  sub    -0x8(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  movzbl (%rcx),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  jmp    L18
L129:
  mov    -0x20(%rbp),%eax
  sub    -0x8(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movb   $0x20,(%rax)
L18:
  addl   $0x1,-0xc(%rbp)
L50:
  mov    -0xc(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L132
  addl   $0x1,-0x8(%rbp)
L131:
  mov    -0x8(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jl     L57
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    -0x2(%rdx),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x20(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  cltq
  lea    -0x2(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  movzbl (%rcx),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x1c(%rbp),%edx
  add    %edx,%edx
  movslq %edx,%rdx
  lea    -0x1(%rdx),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x20(%rbp),%edx
  sub    $0x1,%edx
  imul   -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    -0x1(%rdx),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x28(%rbp),%rax
  mov    %dl,(%rax)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x20(%rbp),%edx
  sub    $0x1,%edx
  imul   -0x1c(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  jmp    L23
L69:
  movl   $0x0,-0xc(%rbp)
  jmp    L111
L178:
  movl   $0x0,-0x8(%rbp)
  jmp    L37
L174:
  mov    -0xc(%rbp),%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  and    $0x1,%eax
  test   %eax,%eax
  jne    L98
  mov    -0x20(%rbp),%ecx
  mov    -0x1c(%rbp),%edx
  mov    -0x8(%rbp),%esi
  mov    -0xc(%rbp),%eax
  mov    %eax,%edi
  call   <is_corner@plt>
  test   %rax,%rax
  je     L16
  mov    -0x8(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movb   $0x43,(%rax)
  jmp    L33
L16:
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x8(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  movzbl (%rcx),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  jmp    L33
L98:
  mov    -0x8(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movb   $0x20,(%rax)
L33:
  addl   $0x1,-0x8(%rbp)
L37:
  mov    -0x8(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jl     L174
  addl   $0x1,-0xc(%rbp)
L111:
  mov    -0xc(%rbp),%eax
  cmp    -0x1c(%rbp),%eax
  jl     L178
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x20(%rbp),%edx
  sub    $0x1,%edx
  imul   -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    -0x1(%rdx),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x20(%rbp),%edx
  sub    $0x2,%edx
  imul   -0x1c(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x20(%rbp),%eax
  imul   -0x1c(%rbp),%eax
  cltq
  lea    -0x2(%rax),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  movzbl (%rcx),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x20(%rbp),%edx
  sub    $0x1,%edx
  imul   -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x1(%rdx),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    -0x1c(%rbp),%edx
  movslq %edx,%rdx
  lea    -0x1(%rdx),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x28(%rbp),%rax
  mov    %dl,(%rax)
L23:
  nop
  leave
  ret
```

assistant: ```c
void fold_dotstream(char dot_stream[], int width, int height, char dot_array[]) {
  int column, row;
  int input_position = 0;
  if (height % 2) {
    for (row = 0; row < height; row++) {
      for (column = 0; column < width; column++) {
        if (!((column + row) % 2)) {
          if (is_corner(column, row, width, height)) {
            dot_array[(row * width) + column] = 'C';
          } else {
            dot_array[((height - row - 1) * width) + column] = dot_stream[input_position];
            input_position++;
          }
        } else {
          dot_array[((height - row - 1) * width) + column] = ' ';
        }
      }
    }
    dot_array[width - 2] = dot_stream[input_position];
    input_position++;
    dot_array[(height * width) - 2] = dot_stream[input_position];
    input_position++;
    dot_array[(width * 2) - 1] = dot_stream[input_position];
    input_position++;
    dot_array[((height - 1) * width) - 1] = dot_stream[input_position];
    input_position++;
    dot_array[0] = dot_stream[input_position];
    input_position++;
    dot_array[(height - 1) * width] = dot_stream[input_position];
  } else {
    for (column = 0; column < width; column++) {
      for (row = 0; row < height; row++) {
        if (!((column + row) % 2)) {
          if (is_corner(column, row, width, height)) {
            dot_array[(row * width) + column] = 'C';
          } else {
            dot_array[(row * width) + column] = dot_stream[input_position];
            input_position++;
          }
        } else {
          dot_array[(row * width) + column] = ' ';
        }
      }
    }
    dot_array[((height - 1) * width) - 1] = dot_stream[input_position];
    input_position++;
    dot_array[(height - 2) * width] = dot_stream[input_position];
    input_position++;
    dot_array[(height * width) - 2] = dot_stream[input_position];
    input_position++;
    dot_array[((height - 1) * width) + 1] = dot_stream[input_position];
    input_position++;
    dot_array[width - 1] = dot_stream[input_position];
    input_position++;
    dot_array[0] = dot_stream[input_position];
  }
}
```