user: Demonstrate the C code that generates the assembly output below:

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  lea    D8(%rip),%r12
  push   %rbp
  push   %rbx
  sub    $0x178,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x168(%rsp)
  xor    %eax,%eax
  lea    0x80(%rsp),%rbp
  lea    0x10(%rsp),%rbx
  nopl   0x0(%rax)
L17:
  mov    %rbp,%rdx
  mov    %rbx,%rsi
  mov    %r12,%rdi
  call   <scanf@plt>
  cmp    $0x2,%eax
  jne    L94
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %rbp,%rdi
  mov    %eax,%r15d
  call   <strlen@plt>
  mov    %eax,%r13d
  cmp    $0x1,%r15d
  je     L210
L10:
  cmp    %r13d,%r15d
  jge    L36
  mov    %r13d,%r9d
  lea    0xf0(%rsp),%r14
  mov    $0x30,%esi
  sub    %r15d,%r9d
  mov    %r14,%rdi
  movslq %r9d,%rdx
  mov    %r9d,0xc(%rsp)
  mov    %rdx,(%rsp)
  call   <memset@plt>
  mov    0xc(%rsp),%r9d
  mov    (%rsp),%rdx
  cmp    %r9d,%r13d
  jl     L130
  lea    (%r14,%rdx,1),%rdi
  mov    %r15d,%edx
  mov    %rbx,%rsi
  add    $0x1,%rdx
  call   <memcpy@plt>
  lea    0x1(%r13),%r9d
  movslq %r9d,%rdx
L130:
  movb   $0x0,0xf0(%rsp,%rdx,1)
  lea    -0x1(%r13),%edx
  xor    %ecx,%ecx
  xor    %esi,%esi
  movslq %edx,%rax
  test   %edx,%edx
  js     L170
  nopw   0x0(%rax,%rax,1)
L1:
  movsbl 0x0(%rbp,%rax,1),%edi
  movsbl (%r14,%rax,1),%edx
  lea    -0x60(%rdi,%rdx,1),%edx
  add    %ecx,%edx
  xor    %ecx,%ecx
  cmp    $0x9,%edx
  jle    L126
  add    $0x1,%esi
  mov    $0x1,%ecx
L126:
  sub    $0x1,%rax
  test   %eax,%eax
  jns    L1
  test   %esi,%esi
  je     L170
L151:
  cmp    $0x1,%esi
  je     L58
  lea    D17(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L17
  nopl   0x0(%rax,%rax,1)
L36:
  mov    %r15d,%r9d
  sub    %r13d,%r9d
  je     L228
  movslq %r9d,%r13
  lea    0xf0(%rsp),%r14
  mov    $0x30,%esi
  mov    %r9d,(%rsp)
  mov    %r13,%rdx
  mov    %r14,%rdi
  call   <memset@plt>
  mov    (%rsp),%r9d
L0:
  cmp    %r15d,%r9d
  jg     L227
L215:
  mov    %r15d,%edx
  lea    0xf0(%rsp,%r13,1),%rdi
  mov    %rbp,%rsi
  sub    %r9d,%edx
  add    $0x1,%rdx
  call   <memcpy@plt>
  lea    0x1(%r15),%r9d
  movslq %r9d,%r13
L227:
  movb   $0x0,0xf0(%rsp,%r13,1)
  sub    $0x1,%r15d
  js     L170
  movslq %r15d,%rax
  xor    %ecx,%ecx
  lea    0xf0(%rsp),%r14
  xor    %esi,%esi
  nopl   0x0(%rax,%rax,1)
L204:
  movsbl (%rbx,%rax,1),%edi
  movsbl (%r14,%rax,1),%edx
  lea    -0x60(%rdi,%rdx,1),%edx
  add    %ecx,%edx
  xor    %ecx,%ecx
  cmp    $0x9,%edx
  jle    L188
  add    $0x1,%esi
  mov    $0x1,%ecx
L188:
  sub    $0x1,%rax
  test   %eax,%eax
  jns    L204
  test   %esi,%esi
  jne    L151
L170:
  lea    D18(%rip),%rdi
  call   <puts@plt>
  jmp    L17
  nopw   0x0(%rax,%rax,1)
L210:
  cmpb   $0x30,0x10(%rsp)
  jne    L10
  cmp    $0x1,%eax
  jne    L10
  cmpb   $0x30,0x80(%rsp)
  je     L94
  xor    %r9d,%r9d
  xor    %r13d,%r13d
  jmp    L215
  nopl   0x0(%rax)
L58:
  lea    D28(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  jmp    L17
  nopl   0x0(%rax,%rax,1)
L94:
  mov    0x168(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L119
  add    $0x178,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L228:
  xor    %r13d,%r13d
  jmp    L0
L119:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_tag: D8
type_guessed: string
name: disassemble_data
arguments: data_tag: D17
type_guessed: string
name: disassemble_data
arguments: data_tag: D18
type_guessed: string
name: disassemble_data
arguments: data_tag: D28
type_guessed: string

tool: D8: %s %s

tool: D17: %d carry operations.


tool: D18: No carry operation.

tool: D28: %d carry operation.


assistant: ```c
int main() {
  char a[101], b[101], sum[105];
  int i, j, sz, sz1;
  int carry[100];
  int x, car;
  while (scanf("%s %s", a, b) == 2) {
    sz = strlen(a);
    sz1 = strlen(b);
    if ((sz == 1 && a[0] == '0') && (sz1 == 1 && b[0] == '0')) {
      break;
    } else if (sz >= sz1) {
      for (i = 0; i <= sz - sz1 - 1; i++) {
        sum[i] = '0';
      }
      i = 0;
      for (j = sz - sz1; j <= sz; j++) {
        sum[j] = b[i];
        i++;
      }
      sum[j] = '\0';
    } else if (sz1 > sz) {
      for (i = 0; i <= sz1 - sz - 1; i++) {
        sum[i] = '0';
      }
      i = 0;
      for (j = sz1 - sz; j <= sz1; j++) {
        sum[j] = a[i];
        i++;
      }
      sum[j] = '\0';
    }
    x = 0, car = 0;
    if (sz >= sz1) {
      for (i = sz - 1; i >= 0; i--) {
        carry[i] = a[i] - '0' + sum[i] - '0' + car;
        if (carry[i] > 9) {
          car = 1;
          x++;
        } else {
          car = 0;
        }
      }
    } else if (sz1 > sz) {
      for (i = sz1 - 1; i >= 0; i--) {
        carry[i] = b[i] - '0' + sum[i] - '0' + car;
        if (carry[i] > 9) {
          car = 1;
          x++;
        } else {
          car = 0;
        }
      }
    }
    if (x == 0) {
      printf("No carry operation.\n");
    } else if (x == 1) {
      printf("%d carry operation.\n", x);
    } else {
      printf("%d carry operations.\n", x);
    }
  }
  return 0;
}
```