Not sure if that is working as intended or not, but it looks to me like instead of Username/ Pass etc names for fields there are the variables names from the actual code
/* std::string mainacct_label_c_nickname; */
and when you are asking for the input instead of saying: Enter your nickname or whatever your going with:
/* std::cout << "mainacct_label_c_nickname: " << std::endl; */
[Just pointing out example in c++, no idea what programming language are you guys using for developing]
so is it working as intended?