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

```asm
<declare_variables>:
  endbr64
  push   %r15
  lea    D73(%rip),%rdi
  push   %r14
  push   %r13
  push   %r12
  lea    D79(%rip),%r12
  push   %rbp
  mov    %r12,%rsi
  push   %rbx
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x10(%rsp),%r13
  call   <fopen@plt>
  lea    D37(%rip),%rsi
  lea    D93(%rip),%rdi
  movl   $0xa,0xc(%rsp)
  movq   $0x0,0x10(%rsp)
  mov    %rax,%r14
  call   <fopen@plt>
  mov    $0xc,%edx
  mov    $0x1,%esi
  lea    D11(%rip),%rdi
  mov    %rax,%rcx
  mov    %rax,%rbp
  call   <fwrite@plt>
  mov    %r12,%rsi
  lea    D4(%rip),%rdi
  lea    0xc(%rsp),%r12
  call   <fopen@plt>
  mov    %rax,%r15
  mov    %rax,%rdx
  jmp    L27
  nopl   0x0(%rax)
L13:
  mov    0x10(%rsp),%rdx
  lea    D75(%rip),%rsi
  mov    %rbp,%rdi
  xor    %eax,%eax
  call   <fprintf@plt>
  mov    %r15,%rdx
L27:
  mov    %r12,%rsi
  mov    %r13,%rdi
  call   <getline@plt>
  mov    0x10(%rsp),%rdi
  mov    %eax,%ebx
  call   <strlen@plt>
  mov    0x10(%rsp),%rdx
  cltq
  movb   $0x0,-0x1(%rdx,%rax,1)
  cmp    $0xffffffff,%ebx
  jne    L13
  mov    %r15,%rdi
  call   <fclose@plt>
  mov    $0x8,%edx
  mov    $0x1,%esi
  mov    %rbp,%rcx
  lea    D78(%rip),%rdi
  call   <fwrite@plt>
  mov    %r14,%rdx
  mov    %r12,%rsi
  mov    %r13,%rdi
  call   <getline@plt>
  cmp    $0xffffffff,%eax
  je     L16
  lea    D36(%rip),%rbx
  nopl   0x0(%rax)
L0:
  mov    0x10(%rsp),%rdx
  mov    %rbx,%rsi
  mov    %rbp,%rdi
  xor    %eax,%eax
  call   <fprintf@plt>
  mov    %r14,%rdx
  mov    %r12,%rsi
  mov    %r13,%rdi
  call   <getline@plt>
  cmp    $0xffffffff,%eax
  jne    L0
L16:
  mov    %rbp,%rcx
  mov    $0x4,%edx
  mov    $0x1,%esi
  lea    D32(%rip),%rdi
  call   <fwrite@plt>
  mov    %r14,%rdi
  call   <fclose@plt>
  mov    %rbp,%rdi
  call   <fclose@plt>
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L30
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L30:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D73
data_type: string
name: retrieve_data
arguments: tag: D79
data_type: string
name: retrieve_data
arguments: tag: D37
data_type: string
name: retrieve_data
arguments: tag: D93
data_type: string
name: retrieve_data
arguments: tag: D11
data_type: string
name: retrieve_data
arguments: tag: D4
data_type: string
name: retrieve_data
arguments: tag: D75
data_type: string
name: retrieve_data
arguments: tag: D78
data_type: string
name: retrieve_data
arguments: tag: D36
data_type: string
name: retrieve_data
arguments: tag: D32
data_type: string

tool: D73: 8086.txt

tool: D79: r

tool: D37: w

tool: D93: output.txt

tool: D11: jmp start 



tool: D4: variables.txt

tool: D75: %s db 0


tool: D78: start:  

tool: D36: %s


tool: D32: ret


assistant: ```c
void declare_variables() {
  FILE *fin = fopen("8086.txt", "r");
  int nbytes = 10;
  char *line = NULL;
  FILE *fout = fopen("output.txt", "w");
  fprintf(fout, "jmp start \n\n");
  FILE *var = fopen("variables.txt", "r");
  int a = getline(&line, &nbytes, var);
  int len = strlen(line);
  line[len - 1] = '\0';
  while (a != -1) {
    fprintf(fout, "%s db 0\n", line);
    a = getline(&line, &nbytes, var);
    int len = strlen(line);
    line[len - 1] = '\0';
  }
  fclose(var);
  fprintf(fout, "start:  ");
  a = getline(&line, &nbytes, fin);
  while (a != -1) {
    fprintf(fout, "%s\n", line);
    a = getline(&line, &nbytes, fin);
  }
  fprintf(fout, "ret\n");
  fclose(fin);
  fclose(fout);
  return;
}
```