user: What is the c source code of the assembly code below:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
L22:
  lea    D39(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <gets@plt>
  lea    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <string_handler@plt>
  mov    %eax,-0x48(%rbp)
  lea    D15(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <gets@plt>
  lea    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <string_handler@plt>
  mov    %eax,-0x44(%rbp)
  cmpl   $0xffffffff,-0x44(%rbp)
  je     L22
  cmpl   $0xffffffff,-0x48(%rbp)
  jne    L14
  jmp    L22
L14:
  nop
  lea    D32(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    -0x48(%rbp),%edx
  mov    -0x44(%rbp),%eax
  mov    %eax,%esi
  lea    D73(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D67(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x44(%rbp),%eax
  mov    $0x20,%edx
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <printbin@plt>
  lea    D25(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x48(%rbp),%eax
  mov    $0x20,%edx
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <printbin@plt>
  lea    D70(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    -0x44(%rbp),%edx
  mov    -0x48(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <booth@plt>
  lea    D47(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L13
  call   <__stack_chk_fail@plt>
L13:
  leave
  ret
```

tool_calls: name: parse_data
arguments: label: D17
datatype: string
name: parse_data
arguments: label: D39
datatype: string
name: parse_data
arguments: label: D15
datatype: string
name: parse_data
arguments: label: D32
datatype: string
name: parse_data
arguments: label: D73
datatype: string
name: parse_data
arguments: label: D67
datatype: string
name: parse_data
arguments: label: D25
datatype: string
name: parse_data
arguments: label: D70
datatype: string
name: parse_data
arguments: label: D47
datatype: string

tool: D17: Start of program:


tool: D39: 
Enter multiplier:   

tool: D15: Enter multiplicand: 

tool: D32: 
================================================================

tool: D73: Multiplying:   %d X %d


tool: D67: Multiplicand: 

tool: D25: 
Multiplier:   

tool: D70: 
=================================================================




tool: D47: 



assistant: ```c
int main() {
  printf("Start of program:\n\n");
  char strMultiplier[20], strMultiplicand[20];
  int multiplier, multiplicand;
  while (1) {
    printf("\nEnter multiplier:   ");
    gets(strMultiplier);
    multiplier = string_handler(strMultiplier);
    printf("Enter multiplicand: ");
    gets(strMultiplicand);
    multiplicand = string_handler(strMultiplicand);
    if (multiplicand != -1 && multiplier != -1)
      break;
  }
  printf("\n================================================================\n");
  printf("Multiplying:   %d X %d\n", multiplicand, multiplier);
  printf("Multiplicand: ");
  printbin(multiplicand, 0, 32);
  printf("\nMultiplier:   ");
  printbin(multiplier, 0, 32);
  printf("\n=================================================================\n\n\n\n");
  booth(multiplier, multiplicand);
  printf("\n\n\n");
  return 0;
}
```