user: What would the C source look like for the assembly code provided here?

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x838,%rsp
  mov    %edi,%ebp
  mov    %rsi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x2828(%rsp)
  xor    %eax,%eax
  lea    D63(%rip),%rdi
  call   <puts@plt>
  cmp    $0x4,%ebp
  jne    L59
L123:
  mov    0x8(%rbx),%rdx
  lea    0x20(%rsp),%rbp
  lea    D17(%rip),%rsi
  mov    %rbp,%rdi
  call   <sprintf@plt>
  lea    D87(%rip),%rsi
  mov    %rbp,%rdi
  call   <fopen@plt>
  mov    %rax,0x8(%rsp)
  test   %rax,%rax
  je     L150
L93:
  mov    0x10(%rbx),%rdx
  lea    0x20(%rsp),%rbp
  lea    D17(%rip),%rsi
  mov    %rbp,%rdi
  call   <sprintf@plt>
  lea    D50(%rip),%rsi
  mov    %rbp,%rdi
  call   <fopen@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L16
L95:
  mov    0x18(%rbx),%rdi
  call   <atoi@plt>
  mov    %eax,%r14d
  lea    -0x1(%rax),%eax
  cmp    $0xf,%eax
  ja     L19
L10:
  mov    $0x0,%r15d
  lea    D19(%rip),%r13
  jmp    L68
L59:
  lea    D51(%rip),%rdi
  call   <puts@plt>
  lea    D126(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L123
L150:
  mov    %rbp,%rsi
  lea    D44(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L93
L16:
  mov    %rbp,%rsi
  lea    D44(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L95
L19:
  lea    D83(%rip),%rdi
  call   <puts@plt>
  mov    $0xffffffff,%edi
  call   <exit@plt>
  jmp    L10
L158:
  lea    D0(%rip),%rdi
  call   <puts@plt>
  mov    %ebp,%esi
  lea    D29(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    0x8(%rsp),%rdi
  call   <fclose@plt>
  mov    %r12,%rdi
  call   <fclose@plt>
  mov    %r15d,%edx
  imul   %r14d,%edx
  lea    0x20(%rsp),%rsi
  lea    D113(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    0x2828(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L60
  mov    $0x0,%eax
  add    $0x2838,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L28:
  sub    $0x1,%rbx
  cmp    %rbp,%rbx
  je     L62
L91:
  mov    %r12,%rcx
  mov    $0x1,%edx
  mov    $0x1,%esi
  mov    %rbx,%rdi
  call   <fwrite@plt>
  cmp    $0x1,%eax
  je     L28
  lea    0x20(%rsp),%rsi
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%edi
  call   <exit@plt>
  jmp    L28
L62:
  add    $0x1,%r15d
L68:
  lea    0x10(%rsp),%rdi
  mov    0x8(%rsp),%rcx
  mov    %r14d,%edx
  mov    $0x1,%esi
  call   <fread@plt>
  mov    %eax,%ebp
  cmp    %eax,%r14d
  jne    L158
  sub    $0x1,%eax
  js     L62
  cltq
  lea    0x10(%rsp,%rax,1),%rbx
  movslq %ebp,%rax
  lea    0xe(%rsp,%rax,1),%rdx
  lea    -0x1(%rbp),%eax
  sub    %rax,%rdx
  mov    %rdx,%rbp
  jmp    L91
L60:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_label: D63
type_guessed: string
name: read_data
arguments: data_label: D17
type_guessed: string
name: read_data
arguments: data_label: D87
type_guessed: string
name: read_data
arguments: data_label: D50
type_guessed: string
name: read_data
arguments: data_label: D19
type_guessed: string
name: read_data
arguments: data_label: D51
type_guessed: string
name: read_data
arguments: data_label: D126
type_guessed: string
name: read_data
arguments: data_label: D44
type_guessed: string
name: read_data
arguments: data_label: D83
type_guessed: string
name: read_data
arguments: data_label: D0
type_guessed: string
name: read_data
arguments: data_label: D29
type_guessed: string
name: read_data
arguments: data_label: D113
type_guessed: string

tool: D63: Aldebaro. March 10, 2009

tool: D17: %s

tool: D87: rb

tool: D50: wb

tool: D19: Error writing file: %s

tool: D51: Usage: <input_file> <output_file> <number_of_bytes_of_each_element>

tool: D126: Example: in.bin out.bin 4  (for swapping 4 bytes of floats)

tool: D44: Error opening file: %s

tool: D83: The <number_of_bytes_of_each_element> must be in the range from 1 to 16!

tool: D0: End of file!

tool: D29: %d

tool: D113: Happy end. Wrote file %s with %d bytes.


assistant: ```c
int main(int argc, char *argv[]) {
  FILE *inputFILEPointer, *outputFILEPointer;
  int numBytes, i, k, k2, counter;
  char x[16];
  char s[10240];
  puts("Aldebaro. March 10, 2009");
  if (argc != 4) {
    printf("Usage: <input_file> <output_file> <number_of_bytes_of_each_element>\n");
    printf("Example: in.bin out.bin 4  (for swapping 4 bytes of floats)\n");
    exit(1);
  }
  sprintf(s, "%s", argv[1]);
  inputFILEPointer = fopen(s, "rb");
  if (inputFILEPointer == NULL) {
    printf("Error opening file: %s", s);
    exit(1);
  }
  sprintf(s, "%s", argv[2]);
  outputFILEPointer = fopen(s, "wb");
  if (outputFILEPointer == NULL) {
    printf("Error opening file: %s", s);
    exit(1);
  }
  numBytes = atoi(argv[3]);
  if (numBytes < 1 || numBytes > 16) {
    puts("The <number_of_bytes_of_each_element> must be in the range from 1 to 16!");
    exit(-1);
  }
  counter = 0;
  do {
    k = fread(&x, 1, numBytes, inputFILEPointer);
    if (k != numBytes) {
      puts("End of file!");
      printf("%d", k);
      break;
    }
    for (i = numBytes - 1; i >= 0; i--) {
      k2 = fwrite(&x[i], 1, 1, outputFILEPointer);
      if (k2 != 1) {
        printf("Error writing file: %s", s);
        exit(-1);
      }
    }
    counter++;
  } while (k == numBytes);
  fclose(inputFILEPointer);
  fclose(outputFILEPointer);
  printf("Happy end. Wrote file %s with %d bytes.\n", s, numBytes * counter);
}
```