Hello, im new here. looking for some help. Im trying to create a user name and password for the code below. im new to programing. pls help. include<iostream> include<fstream> include<windows.h> include<string> include <conio.h> using namespace std; struct Name // structure for naming in program { char first[20]; //character arrays for the names used in program.. char last[20]; char date[20]; int room; char cnic[20],mob[20]; }; //Functions prototyping// void vacant_rooms(); //for vacant rooms| void...