user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  push   %r15
  lea    D62(%rip),%rdi
  push   %r14
  lea    D55(%rip),%r14
  push   %r13
  push   %r12
  lea    D51(%rip),%r12
  push   %rbp
  push   %rbx
  sub    $0x68,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x58(%rsp)
  xor    %eax,%eax
  movl   $0x0,0x1c(%rsp)
  lea    0x1b(%rsp),%r13
  lea    0x20(%rsp),%rbx
  call   <puts@plt>
  lea    D46(%rip),%rsi
  lea    D25(%rip),%rdi
  call   <fopen@plt>
  mov    %rax,%rbp
  xor    %eax,%eax
  call   <importdict@plt>
  mov    %rax,(%rsp)
L2:
  mov    %r14,%rdi
  call   <puts@plt>
  mov    %r12,%rdi
  mov    %r13,%rsi
  call   <scanf@plt>
  movsbl 0x1b(%rsp),%edi
  call   <tolower@plt>
  cmp    $0x6e,%eax
  je     L48
  cmp    $0x79,%eax
  jne    L2
  lea    D27(%rip),%rdi
  mov    %rbx,%r15
  call   <puts@plt>
  mov    %rbx,%rsi
  lea    D29(%rip),%rdi
  call   <scanf@plt>
  jmp    L70
  nopw   0x0(%rax,%rax,1)
L15:
  movsbl -0x1(%r15),%edi
  call   <toupper@plt>
  mov    %al,-0x1(%r15)
L70:
  mov    %rbx,%rdi
  add    $0x1,%r15
  call   <strlen@plt>
  mov    %eax,%r8d
  lea    -0x1(%r15),%eax
  sub    %ebx,%eax
  cmp    %eax,%r8d
  jg     L15
  lea    0x40(%rsp),%rcx
  mov    %rbx,%rsi
  mov    %rcx,%rdi
  mov    %rcx,0x8(%rsp)
  call   <strcpy@plt>
  mov    0x8(%rsp),%rcx
  xor    %r8d,%r8d
  mov    %rbx,%rdx
  mov    (%rsp),%rsi
  lea    0x1c(%rsp),%r9
  mov    %rbp,%rdi
  call   <permuteString@plt>
  mov    0x1c(%rsp),%eax
  test   %eax,%eax
  je     L7
L4:
  movl   $0x0,0x1c(%rsp)
  jmp    L2
  xchg   %ax,%ax
L48:
  mov    %rbp,%rdi
  call   <fclose@plt>
  mov    0x58(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L51
  add    $0x68,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L7:
  mov    %rbx,%rsi
  lea    D85(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbx,%rdx
  lea    D85(%rip),%rsi
  mov    %rbp,%rdi
  call   <fprintf@plt>
  jmp    L4
L51:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D62
datatype: string
name: extract_symbolic_data
arguments: data_label: D55
datatype: string
name: extract_symbolic_data
arguments: data_label: D51
datatype: string
name: extract_symbolic_data
arguments: data_label: D46
datatype: string
name: extract_symbolic_data
arguments: data_label: D25
datatype: string
name: extract_symbolic_data
arguments: data_label: D27
datatype: string
name: extract_symbolic_data
arguments: data_label: D29
datatype: string
name: extract_symbolic_data
arguments: data_label: D85
datatype: string

tool: D62: Welcome to the Jumble Puzzle Solver!

tool: D55: Would you like to enter a jumbled word?

tool: D51:  %c

tool: D46: w

tool: D25: jumbleout.txt

tool: D27: What word would you like scored?

tool: D29: %s

tool: D85: Sorry, no permutations of %s form a word.


assistant: ```c
int main() {
  FILE *ofp;
  char **dictionary;
  char choice, entry[20], copyentry[20];
  int i, flag = 0, *flagpointer;
  flagpointer = &flag;
  printf("Welcome to the Jumble Puzzle Solver!\n");
  ofp = fopen("jumbleout.txt", "w");
  dictionary = importdict();
  while (1) {
    printf("Would you like to enter a jumbled word?\n");
    scanf(" %c", &choice);
    switch (tolower(choice)) {
    case 'n':
      fclose(ofp);
      return 0;
    case 'y':
      printf("What word would you like scored?\n");
      scanf("%s", entry);
      for (i = 0; i < strlen(entry); i++)
        entry[i] = toupper(entry[i]);
      strcpy(copyentry, entry);
      permuteString(ofp, dictionary, entry, copyentry, 0, flagpointer);
      if (*flagpointer == 0) {
        printf("Sorry, no permutations of %s form a word.\n", entry);
        fprintf(ofp, "Sorry, no permutations of %s form a word.\n", entry);
      }
      *flagpointer = 0;
      continue;
    }
  }
}
```