please help me get the correct code in C++ and provide a screenshot of the correct output

Avoid using built-in big integers to solve this challenge. Implement them yourself, since this is what you would be asked to do during a real interview. Given two binary strings and , add them together and return the resulting string. Example - For and b= "111" , the output should be - [input] string a A string that can contain only and Guaranteed constraints: - [input] string b A string that can contain only and Guaranteed constraints: - [output] string The result of adding strings a and b, without any leading zeros Inputs as bs 1101" Expected Outputs 10100=