well for the mystring function i will say:
i wanted to be able to pass a string obj to the function and made the *this default so it would work both ways. eg:
but i have changed my functions, they don't take any arguments now and modify *this and return it as well.Code:sting std_str = "ABC";
mystring str;
//like this
str.lower_case(std_str);
//and on its own like this
str.lower_case();