c++ ta iki binary sayıyı toplamak

#include <iostream>
#include <bitset>
using namespace std;

int main()
{
    int decimal1 = 0, decimal2 = 0, digit1, digit2, sum;
   char tmp = '0';
   cout << "Enter two binary numbers:" << endl;
   tmp = cin.get();

   if (cin.fail() || !(tmp == '0' || tmp == '1')) {
    cout << "Invalid input." << endl;
    return 0;
   }
   while (cin.good() && (tmp == '0' || tmp == '1')) {
    digit1 = tmp - '0';
    decimal1 = decimal1 * 2 + digit1;
    tmp = cin.get();
   }

   if (cin.fail() || !(tmp == '\n')) {
    cout << "Invalid input." << endl;
    return 0;
   }

      tmp = cin.get();
   if (cin.fail() || !(tmp == '0' || tmp == '1')) {
    cout << "Invalid input." << endl;
    return 0;
   }
   while (cin.good() && (tmp == '0' || tmp == '1')) {
    digit2 = tmp - '0';
    decimal2 = decimal2 * 2 + digit2;
    tmp = cin.get();
   }
   if (cin.fail() || !(tmp == '\n')) {
    cout << "Invalid input." << endl;
    return 0;
   }

   sum = decimal1 + decimal2;

   bitset<8> x(sum);
   cout << "Sum: " << x << endl;


    return 0;
}

#include <iostream> 
 #include <cstring>  
 #include <stdlib.h>  
 #include <bitset> 
 using namespace std; 
  
 string al; 
 string temp; 
 string say1_temp; 
 string say2_temp; 
 string sonuc; 
 bool kilit(false); 
 int sayi1(0); 
 int sayi2(0); 
 char *ptr(NULL); 
 int n; 
  
 unsigned char boyut(0); 
  
  
 int cevir(int n) 
 { 
     int cikis = 0; 
  
     for(int i=0; n > 0; i++) { 
  
         if(n % 10 == 1) { 
             cikis += (1 << i); 
         } 
         n /= 10; 
     } 
  
     return cikis; 
 } 
  
 int main() { 
 	 
 	cout<<"iki binary sayi girin (max 8 Bit , max 8 bit) ";getline (cin,al ); 
 	   boyut=al.length(); 
 	cout<<endl; 
 	 
     
  
 ptr=new char[boyut]; 
 int *dizi=new int[boyut]; 
 strcpy(ptr, al.c_str()); 
  
 for ( int i = 0 ; i < (int)boyut; i++ ) {      
   
  if (ptr[i]==(int)32 ){kilit=true;} 
  else if (ptr[i]==(int)48 || ptr[i]==(int)49 )  {  
                                                  if(kilit)say1_temp+=ptr[(int)i]; 
 								                  else say2_temp+=ptr[(int)i]; 
 											    } 
   
  else {cout<<"hata"<<endl; break;} 
 	} 
 		kilit=false; 
         temp=""; 
          
          
 cout<<endl; 
 n=atoi(say1_temp.c_str()); 
 sayi1=cevir(n); 
 n=atoi(say2_temp.c_str()); 
 sayi2=cevir(n); 
 cout<<"iki sayinin toplami (dec):    "<<sayi1+sayi2; 
 cout<<endl; 
 bitset<16> x(sayi1+sayi2); 
 sonuc=x.to_string(); 
 strcpy(ptr, sonuc.c_str()); 
 cout<<"Sayinin orijinal hali: (bin): "<<sonuc<<endl; 
 cout<<endl; 
  
  
 for ( int i = 0 ; i < 16; i++ ) {   
  
 if (ptr[i]==(int)49 ) kilit=true;  
 if (kilit)temp+=ptr[(int)i]; 
  
 //cout<<ptr[i]; 
  
 } 
 cout<<endl; 
 cout<<"son deger (bin):              "<<temp<<endl; 
  
 	return 0; 
 }