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

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x118,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  lea    -0x100(%rbp),%rax
  mov    %rax,%rsi
  lea    D19(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  lea    -0x111(%rbp),%rax
  mov    %rax,%rsi
  lea    D47(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  lea    -0xc0(%rbp),%rax
  mov    %rax,%rsi
  lea    D33(%rip),%rax
  mov    %rax,%rdi
  call   <scanf@plt>
  movzbl -0x111(%rbp),%eax
  movsbl %al,%edx
  lea    -0x100(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <index@plt>
  test   %eax,%eax
  jne    L108
  movl   $0x0,-0x110(%rbp)
  jmp    L122
L105:
  lea    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    %eax,-0x110(%rbp)
  jge    L119
  mov    -0x110(%rbp),%eax
  cltq
  movzbl -0xc0(%rbp,%rax,1),%edx
  mov    -0x110(%rbp),%eax
  cltq
  mov    %dl,-0x80(%rbp,%rax,1)
  jmp    L83
L119:
  lea    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    -0x110(%rbp),%eax
  sub    %edx,%eax
  cltq
  movzbl -0x100(%rbp,%rax,1),%edx
  mov    -0x110(%rbp),%eax
  cltq
  mov    %dl,-0x80(%rbp,%rax,1)
L83:
  addl   $0x1,-0x110(%rbp)
L122:
  lea    -0x100(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,%ebx
  lea    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  add    %ebx,%eax
  cmp    %eax,-0x110(%rbp)
  jl     L105
  lea    -0x80(%rbp),%rax
  mov    %rax,%rsi
  lea    D33(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  jmp    L114
L108:
  movzbl -0x111(%rbp),%eax
  movsbl %al,%edx
  lea    -0x100(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <index@plt>
  test   %eax,%eax
  jle    L7
  movl   $0x0,-0x10c(%rbp)
  jmp    L84
L66:
  mov    -0x10c(%rbp),%eax
  cltq
  movzbl -0x100(%rbp,%rax,1),%edx
  mov    -0x10c(%rbp),%eax
  cltq
  mov    %dl,-0x80(%rbp,%rax,1)
  addl   $0x1,-0x10c(%rbp)
L84:
  movzbl -0x111(%rbp),%eax
  movsbl %al,%edx
  lea    -0x100(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <index@plt>
  cmp    %eax,-0x10c(%rbp)
  jl     L66
  movl   $0x0,-0x108(%rbp)
  movzbl -0x111(%rbp),%eax
  movsbl %al,%edx
  lea    -0x100(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <index@plt>
  mov    %eax,-0x10c(%rbp)
  jmp    L12
L21:
  mov    -0x108(%rbp),%eax
  cltq
  movzbl -0xc0(%rbp,%rax,1),%edx
  mov    -0x10c(%rbp),%eax
  cltq
  mov    %dl,-0x80(%rbp,%rax,1)
  addl   $0x1,-0x108(%rbp)
  addl   $0x1,-0x10c(%rbp)
L12:
  movzbl -0x111(%rbp),%eax
  movsbl %al,%edx
  lea    -0x100(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <index@plt>
  mov    %eax,%ebx
  lea    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  add    %ebx,%eax
  cmp    %eax,-0x10c(%rbp)
  jl     L21
  movzbl -0x111(%rbp),%eax
  movsbl %al,%edx
  lea    -0x100(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <index@plt>
  mov    %eax,-0x104(%rbp)
  movzbl -0x111(%rbp),%eax
  movsbl %al,%edx
  lea    -0x100(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <index@plt>
  mov    %eax,%ebx
  lea    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  add    %ebx,%eax
  mov    %eax,-0x10c(%rbp)
  jmp    L52
L28:
  mov    -0x104(%rbp),%eax
  cltq
  movzbl -0x100(%rbp,%rax,1),%edx
  mov    -0x10c(%rbp),%eax
  cltq
  mov    %dl,-0x80(%rbp,%rax,1)
  addl   $0x1,-0x104(%rbp)
  addl   $0x1,-0x10c(%rbp)
L52:
  lea    -0x100(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,%ebx
  lea    -0xc0(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  add    %ebx,%eax
  cmp    %eax,-0x10c(%rbp)
  jl     L28
  lea    -0x80(%rbp),%rax
  mov    %rax,%rsi
  lea    D33(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  jmp    L114
L7:
  lea    -0x100(%rbp),%rax
  mov    %rax,%rsi
  lea    D33(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
L114:
  mov    $0x0,%eax
  mov    -0x18(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L110
  call   <__stack_chk_fail@plt>
L110:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

tool_calls: name: unpack_data
arguments: tag: D19
type_infered: string
name: unpack_data
arguments: tag: D47
type_infered: string
name: unpack_data
arguments: tag: D33
type_infered: string

tool: D19: %s


tool: D47: %c


tool: D33: %s

assistant: ```c
int main() {
  char s1[50], s2[50], c1;
  scanf("%s\n", s1);
  scanf("%c\n", &c1);
  scanf("%s", s2);
  char s3[100];
  int i, j;
  if ((index(s1, c1)) == 0) {
    for (i = 0; i < (strlen(s1) + strlen(s2)); i++) {
      if (i < strlen(s2))
        s3[i] = s2[i];
      else
        s3[i] = s1[(i - strlen(s2))];
    }
    printf("%s", s3);
  } else if (index(s1, c1) > 0) {
    for (j = 0; j < index(s1, c1); j++) {
      s3[j] = s1[j];
    }
    int k = 0;
    for (j = index(s1, c1); j < (index(s1, c1) + strlen(s2)); j++) {
      s3[j] = s2[k];
      k++;
    }
    int l = index(s1, c1);
    for (j = (index(s1, c1) + strlen(s2)); j < (strlen(s1) + strlen(s2)); j++) {
      s3[j] = s1[l];
      l++;
    }
    printf("%s", s3);
  } else {
    printf("%s", s1);
  }
  return 0;
}
```