#include<stdio.h>
#include<string.h>
int binaryToTwoComplement(char*binary)
{
    for(int i=0; i<lenght; i++)
    {
        if(binary[i] !='0' && binary[i] !='1')
        {
            return -999;
        }
    }
    int decimal =0;
    if(binary[0]=='1')
    {
        for (int i=lenght-1;i>=0;i--)
        {
            if (binary[i]=='0')
            {
                decimal+=carry*(1<<(lenght -1-i));
                carry=0;
            }
        }
    }
}