user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  push   %r15
  mov    $0x80,%edi
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  call   <malloc@plt>
  xor    %ecx,%ecx
  mov    %rax,0x8(%rsp)
  mov    %rax,%rsi
  mov    %rax,%r12
  nopl   0x0(%rax)
L49:
  xor    %eax,%eax
L22:
  lea    (%rcx,%rax,1),%edx
  mov    %edx,(%rsi,%rax,4)
  add    $0x1,%rax
  cmp    $0x4,%rax
  jne    L22
  add    $0x4,%ecx
  add    $0x10,%rsi
  cmp    $0x20,%ecx
  jne    L49
  lea    D24(%rip),%rdi
  lea    D10(%rip),%rbx
  call   <puts@plt>
  mov    0x8(%rsp),%rax
  lea    0x80(%rax),%rbp
  nopl   (%rax)
L43:
  mov    (%r12),%esi
  mov    %rbx,%rdi
  xor    %eax,%eax
  add    $0x4,%r12
  call   <printf@plt>
  cmp    %rbp,%r12
  jne    L43
  mov    $0xa,%edi
  mov    %rbp,%r13
  xor    %r15d,%r15d
  call   <putchar@plt>
  lea    D3(%rip),%rdi
  call   <puts@plt>
  nopl   0x0(%rax,%rax,1)
L77:
  lea    -0x80(%r13),%r12
L90:
  mov    (%r12),%esi
  mov    %rbx,%rdi
  xor    %eax,%eax
  add    $0x20,%r12
  call   <printf@plt>
  cmp    %r13,%r12
  jne    L90
  mov    $0xa,%edi
  add    $0x1,%r15d
  lea    0x4(%r12),%r13
  call   <putchar@plt>
  cmp    $0x8,%r15d
  jne    L77
  mov    $0x80,%edi
  call   <malloc@plt>
  xor    %esi,%esi
  mov    %rax,%r15
  mov    %rax,%r12
  mov    %rax,%rdi
  nopl   0x0(%rax)
L138:
  lea    -0x80(%rbp),%rax
  mov    %rdi,%rdx
L137:
  mov    (%rax),%ecx
  add    $0x20,%rax
  add    $0x4,%rdx
  mov    %ecx,-0x4(%rdx)
  cmp    %rbp,%rax
  jne    L137
  add    $0x1,%esi
  add    $0x10,%rdi
  lea    0x4(%rax),%rbp
  cmp    $0x8,%esi
  jne    L138
  lea    D6(%rip),%rdi
  lea    0x80(%r15),%r13
  mov    %r15,%rbp
  call   <puts@plt>
  nopw   0x0(%rax,%rax,1)
L61:
  mov    0x0(%rbp),%esi
  mov    %rbx,%rdi
  xor    %eax,%eax
  add    $0x4,%rbp
  call   <printf@plt>
  cmp    %r13,%rbp
  jne    L61
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    $0x80,%edi
  call   <malloc@plt>
  xor    %edi,%edi
  lea    0x80(%rax),%rbp
  mov    %rax,%r13
  mov    %rbp,%rsi
  nopl   0x0(%rax)
L129:
  lea    -0x80(%rsi),%rax
  mov    %r12,%rdx
L83:
  mov    (%rdx),%ecx
  add    $0x20,%rax
  add    $0x4,%rdx
  mov    %ecx,-0x20(%rax)
  cmp    %rsi,%rax
  jne    L83
  add    $0x1,%edi
  add    $0x10,%r12
  lea    0x4(%rax),%rsi
  cmp    $0x8,%edi
  jne    L129
  lea    D34(%rip),%rdi
  mov    %r13,%r12
  call   <puts@plt>
  nopl   0x0(%rax,%rax,1)
L93:
  mov    (%r12),%esi
  mov    %rbx,%rdi
  xor    %eax,%eax
  add    $0x4,%r12
  call   <printf@plt>
  cmp    %rbp,%r12
  jne    L93
  mov    $0xa,%edi
  lea    0x30(%r13),%r14
  mov    %r13,%rbx
  call   <putchar@plt>
  lea    D7(%rip),%rdi
  lea    D44(%rip),%r12
  call   <puts@plt>
  nopl   0x0(%rax,%rax,1)
L54:
  mov    (%rbx),%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  add    $0x4,%rbx
  call   <printf@plt>
  cmp    %rbx,%r14
  jne    L54
  mov    $0xa,%edi
  lea    0x60(%r13),%rbx
  call   <putchar@plt>
  nopl   0x0(%rax,%rax,1)
L136:
  mov    (%r14),%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  add    $0x4,%r14
  call   <printf@plt>
  cmp    %r14,%rbx
  jne    L136
  mov    $0xa,%edi
  call   <putchar@plt>
  nopl   0x0(%rax,%rax,1)
L42:
  mov    (%rbx),%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  add    $0x4,%rbx
  call   <printf@plt>
  cmp    %rbp,%rbx
  jne    L42
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    0x8(%rsp),%rdi
  call   <free@plt>
  mov    %r15,%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <free@plt>
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D24
type_guessed: string
name: unpack_data
arguments: data_tag: D10
type_guessed: string
name: unpack_data
arguments: data_tag: D3
type_guessed: string
name: unpack_data
arguments: data_tag: D6
type_guessed: string
name: unpack_data
arguments: data_tag: D34
type_guessed: string
name: unpack_data
arguments: data_tag: D7
type_guessed: string
name: unpack_data
arguments: data_tag: D44
type_guessed: string

tool: D24: 1D progression is the same in both cases:

tool: D10: %i 

tool: D3: Except that, in 2D, column-major looks like so:

tool: D6: So naive mapping to 1D, column-major looks like this:

tool: D34: Arr3:

tool: D7: How the new array looks ...

tool: D44: %2i 

assistant: ```c
int main(int argc, char **argv) {
  int i, j;
  const int nclines = 32;
  const int ncols = 4;
  int nrows = nclines / ncols;
  int *arr = malloc(nclines * sizeof(int));
  int k = 0;
  for (i = 0; i < nrows; ++i)
    for (j = 0; j < ncols; ++j) {
      arr[k++] = i * ncols + j;
    }
  printf("1D progression is the same in both cases:\n");
  for (i = 0; i < nclines; ++i)
    printf("%i ", arr[i]);
  printf("\n");
  printf("Except that, in 2D, column-major looks like so:\n");
  for (j = 0; j < nrows; ++j) {
    for (i = 0; i < ncols; ++i)
      printf("%i ", arr[j + i * nrows]);
    printf("\n");
  }
  k = 0;
  int *arr2 = malloc(nclines * sizeof(int));
  for (j = 0; j < nrows; ++j)
    for (i = 0; i < ncols; ++i)
      arr2[j * ncols + i] = arr[j + nrows * i];
  printf("So naive mapping to 1D, column-major looks like this:\n");
  for (i = 0; i < nclines; ++i)
    printf("%i ", arr2[i]);
  printf("\n");
  int *arr3 = malloc(nclines * sizeof(int));
  for (i = 0; i < nrows; ++i)
    for (j = 0; j < ncols; ++j)
      arr3[j * nrows + i] = arr2[i * ncols + j];
  printf("Arr3:\n");
  for (i = 0; i < nclines; ++i)
    printf("%i ", arr3[i]);
  printf("\n");
  int ncols2 = 12;
  int nrows2 = nclines / ncols2;
  int lastpr = nclines % ncols2;
  printf("How the new array looks ...\n");
  for (i = 0; i < nrows2; ++i) {
    for (j = 0; j < ncols2; ++j)
      printf("%2i ", arr3[i * ncols2 + j]);
    printf("\n");
  }
  for (j = 0; j < lastpr; ++j)
    printf("%2i ", arr3[i * ncols2 + j]);
  printf("\n");
  free(arr);
  free(arr2);
  free(arr3);
  return 0;
}
```