add 2 binary value

baran_binary.cpp

#include<iostream>
#include<cmath>

using namespace std;

int decimal_binary(int n)  /* Function to convert decimal to binary.*/
{
	int rem, i = 1, binary = 0;
	while (n != 0)
	{
		rem = n % 2;
		n /= 2;
		binary += rem*i;
		i *= 10;
	}
	return binary;
}

int binary_decimal(int n) /* Function to convert binary to decimal.*/
{
	int decimal = 0, i = 0, rem;
	while (n != 0)
	{
		rem = n % 10;
		n /= 10;
		decimal += rem*pow(2, i);
		++i;
	}
	return decimal;
}

int main()
{
	int a, b;
	cin >> a >> b;
	cout << decimal_binary( binary_decimal(a) + binary_decimal(b));
}