XOR_WhatTheFuck

#include <stdio.h>

long toBinary (int num)
{
	int bin = 0;
	int place = 1;
	for (; num != 0;)
	{
		int itr = num;
		int rem = itr % 2;
		num /= 2;
		itr = num;
		bin += (rem * place);
		place *= 10;
	}
	return bin;
}

long rightShift (long num)
{
	return (num - (num % 10))/10;
}

int lenInt (long num)
{
	int ret = 0;
	while (num)
	{
		num = rightShift(num);
		ret++;
	}
	return ret;
}

int XOR (int a, int b)
{
	return ((a == 1 && b == 1) || (a == 0 && b == 0))?0:1;
}

long getXOR(long a, long b)
{
	int lenA = lenInt(a);
	int lenB = lenInt(b);
	int len = ((lenA>lenB)?lenA:lenB);
	long sum = 0;
	int power = 1;
	for (int i = 0; i < len ; i++)
	{
		printf("\n%ld XOR %ld = %d\n", a%10, b%10, XOR(a%10, b%10));
		sum += XOR(a%10, b%10)*power;
		power *= 10;
		a = rightShift(a);
		b = rightShift(b);
	}
	return sum;
}

int toDec (long a)
{
	int len = lenInt(a);
	long power = 1;
	int dec = 0;
	for (int i = 0; i < len; i++)
	{
		dec += a%10 * power;
		power *= 2;
		a = rightShift(a);
	}
	return dec;
}


int main()
{
	long a = toBinary(1);
	long b = toBinary(3);
	printf("\n%d", toDec(getXOR(a, b)));
}

Itna basic