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

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x168,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x158(%rsp)
  xor    %eax,%eax
  lea    D23(%rip),%rbp
  lea    D8(%rip),%r12
  mov    $0x0,%ebx
  jmp    L140
L177:
  cmpb   $0x30,(%rsp)
  jne    L42
  cmp    $0x1,%eax
  jne    L42
  cmpb   $0x30,0x70(%rsp)
  je     L152
  mov    %r13d,%ecx
  sub    %eax,%ecx
  jmp    L281
L227:
  mov    %r13d,%ecx
  sub    %edx,%ecx
  test   %ecx,%ecx
  jle    L281
  lea    0xe0(%rsp),%rax
  lea    -0x1(%rcx),%edx
  lea    0xe1(%rsp,%rdx,1),%rdx
L247:
  movb   $0x30,(%rax)
  add    $0x1,%rax
  cmp    %rdx,%rax
  jne    L247
L281:
  cmp    %r13d,%ecx
  jg     L55
  movslq %ecx,%rcx
  mov    %rcx,%rax
  lea    0x70(%rsp),%rsi
  sub    %rcx,%rsi
L210:
  movzbl (%rsi,%rax,1),%edx
  mov    %dl,0xe0(%rsp,%rax,1)
  add    $0x1,%rax
  cmp    %eax,%r13d
  jge    L210
  lea    0x1(%r13),%ecx
L55:
  movslq %ecx,%rcx
  movb   $0x0,0xe0(%rsp,%rcx,1)
  sub    $0x1,%r13d
  movslq %r13d,%rax
  mov    %ebx,%ecx
  mov    $0x0,%esi
  mov    %rsp,%r9
  lea    0xe0(%rsp),%r8
  mov    $0x1,%r10d
  jns    L225
L132:
  mov    %r12,%rdi
  call   <puts@plt>
  jmp    L140
L145:
  sub    $0x1,%rax
  test   %eax,%eax
  js     L254
L225:
  movsbl (%rax,%r9,1),%edi
  movsbl (%rax,%r8,1),%edx
  lea    -0x60(%rdi,%rdx,1),%edx
  add    %ecx,%edx
  mov    %ebx,%ecx
  cmp    $0x9,%edx
  jle    L145
  add    $0x1,%esi
  mov    %r10d,%ecx
  jmp    L145
L201:
  sub    $0x1,%rax
  test   %eax,%eax
  js     L254
L48:
  movsbl (%rax,%r9,1),%edi
  movsbl (%rax,%r8,1),%edx
  lea    -0x60(%rdi,%rdx,1),%edx
  add    %ecx,%edx
  mov    %ebx,%ecx
  cmp    $0x9,%edx
  jle    L201
  add    $0x1,%esi
  mov    %r10d,%ecx
  jmp    L201
L254:
  test   %esi,%esi
  je     L132
  cmp    $0x1,%esi
  je     L205
  lea    D3(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
L140:
  lea    0x70(%rsp),%rdx
  mov    %rsp,%rsi
  mov    %rbp,%rdi
  call   <scanf@plt>
  cmp    $0x2,%eax
  jne    L152
  mov    %rsp,%rdi
  call   <strlen@plt>
  mov    %eax,%r13d
  lea    0x70(%rsp),%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  cmp    $0x1,%r13d
  je     L177
L42:
  cmp    %edx,%r13d
  jge    L227
  mov    %edx,%ecx
  sub    %r13d,%ecx
  lea    0xe0(%rsp),%rax
  lea    -0x1(%rcx),%esi
  lea    0xe1(%rsp,%rsi,1),%rsi
L117:
  movb   $0x30,(%rax)
  add    $0x1,%rax
  cmp    %rsi,%rax
  jne    L117
  cmp    %ecx,%edx
  jl     L178
  movslq %ecx,%rcx
  mov    %rcx,%rax
  mov    %rsp,%rsi
  sub    %rcx,%rsi
L87:
  movzbl (%rsi,%rax,1),%ecx
  mov    %cl,0xe0(%rsp,%rax,1)
  add    $0x1,%rax
  cmp    %eax,%edx
  jge    L87
  lea    0x1(%rdx),%ecx
L178:
  movslq %ecx,%rcx
  movb   $0x0,0xe0(%rsp,%rcx,1)
  sub    $0x1,%edx
  movslq %edx,%rax
  mov    %ebx,%ecx
  mov    $0x0,%esi
  lea    0x70(%rsp),%r9
  lea    0xe0(%rsp),%r8
  mov    $0x1,%r10d
  jns    L48
  jmp    L132
L205:
  lea    D16(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  jmp    L140
L152:
  mov    0x158(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L99
  mov    $0x0,%eax
  add    $0x168,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L99:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: label: D23
data_type: string
name: parse_data
arguments: label: D8
data_type: string
name: parse_data
arguments: label: D3
data_type: string
name: parse_data
arguments: label: D16
data_type: string

tool: D23: %s %s

tool: D8: No carry operation.

tool: D3: %d carry operations.


tool: D16: %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;
}
```