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

```asm
<main>:
  endbr64
  push   %rbx
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  lea    0x10(%rsp),%rcx
  lea    0x15(%rsp),%rbx
  lea    0xc(%rsp),%rsi
  mov    %rbx,%rdx
  lea    D94(%rip),%rdi
  call   <scanf@plt>
  lea    D27(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  mov    $0x0,%ebx
  test   %eax,%eax
  je     L80
L53:
  lea    0x15(%rsp),%rdi
  lea    D62(%rip),%rsi
  call   <strcmp@plt>
  test   %eax,%eax
  je     L88
L86:
  lea    0x15(%rsp),%rdi
  lea    D120(%rip),%rsi
  call   <strcmp@plt>
  test   %eax,%eax
  je     L110
L70:
  lea    0x15(%rsp),%rdi
  lea    D82(%rip),%rsi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L141
  mov    0x10(%rsp),%ecx
  test   %ecx,%ecx
  jne    L56
L166:
  test   %ebx,%ebx
  je     L5
L83:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L165
  mov    $0x0,%eax
  add    $0x20,%rsp
  pop    %rbx
  ret
L80:
  mov    0x10(%rsp),%esi
  add    0xc(%rsp),%esi
  lea    D88(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%ebx
  jmp    L53
L88:
  mov    0xc(%rsp),%esi
  sub    0x10(%rsp),%esi
  lea    D88(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%ebx
  jmp    L86
L110:
  mov    0xc(%rsp),%esi
  imul   0x10(%rsp),%esi
  lea    D88(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%ebx
  jmp    L70
L56:
  mov    0xc(%rsp),%eax
  cltd
  idiv   %ecx
  mov    %eax,%esi
  lea    D88(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    0x15(%rsp),%rdi
  lea    D23(%rip),%rsi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L83
  mov    0x10(%rsp),%ecx
  test   %ecx,%ecx
  je     L83
  jmp    L147
L141:
  lea    0x15(%rsp),%rdi
  lea    D23(%rip),%rsi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L166
  mov    0x10(%rsp),%ecx
  test   %ecx,%ecx
  je     L166
L147:
  mov    0xc(%rsp),%eax
  cltd
  idiv   %ecx
  mov    %edx,%esi
  lea    D88(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L83
L5:
  lea    D80(%rip),%rdi
  call   <puts@plt>
  jmp    L83
L165:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: label: D94
data_type: string
name: unpack_data
arguments: label: D27
data_type: string
name: unpack_data
arguments: label: D62
data_type: string
name: unpack_data
arguments: label: D120
data_type: string
name: unpack_data
arguments: label: D82
data_type: string
name: unpack_data
arguments: label: D88
data_type: string
name: unpack_data
arguments: label: D23
data_type: string
name: unpack_data
arguments: label: D80
data_type: string

tool: D94: %d %s %d

tool: D27: add

tool: D62: sub

tool: D120: mul

tool: D82: div

tool: D88: %d


tool: D23: mod

tool: D80: error

assistant: ```c
int main(int argc, char *argv[]) {
  int a, b, c, f;
  char str[3];
  scanf("%d %s %d", &a, str, &b);
  f = 0;
  c = 0;
  if (!strcmp(str, "add")) {
    c = a + b;
    f = 1;
    printf("%d\n", c);
  }
  if (!strcmp(str, "sub")) {
    c = a - b;
    f = 1;
    printf("%d\n", c);
  }
  if (!strcmp(str, "mul")) {
    c = a * b;
    f = 1;
    printf("%d\n", c);
  }
  if (!strcmp(str, "div")) {
    if (b != 0) {
      c = a / b;
      f = 1;
      printf("%d\n", c);
    }
  }
  if (!strcmp(str, "mod")) {
    if (b != 0) {
      c = a % b;
      f = 1;
      printf("%d\n", c);
    }
  }
  if (f == 0)
    printf("error\n");
  return 0;
}
```