This program might look ordinary at first glance as It only creates some files and then fetches the data from them . But the working and the functionality of our app Lies behind the scenes .
Using this very app the users , yes multiple users Can chats in-between two devices . Over the Internet .
void load_animation();
void greeting();
void loading(int , int);
void credits();
void main_menu();
void login_page();
void register_page();
void user_menu();
void list_of_users();
void send_message();
void add_friend();
void online_users();
void logout();
void list_of_users();
void user_friends() ;
void credit();\
void system_color(int);
Upon clicking the .exe file of this application you are greated with an amazing enriched with colors animation pane . Which is done via the Function : greetings( ) loading( ) Loading_animation( )
This Is happening due to the function ,
Loading(int , int )
This function takes two Parameters . The first one controls the Loading speed of the bar And the second one controls the Length of the loading bar .
To achieve this effect we are using : #include<windows.h>
We are using the predefined function Sleep(n) ; which pauses n-mili seconds after printing . a unit/char of our loading bar .
In the extended ASCII table we have a set of unique Characters at values 176 , 177 , 178 and 219 .
These special characters are being printed using a for loop , in the same line which creates the effect of animated loading bar .
Ahhh !!! The magic begins here !
The register menu takes in the input of Username and password in
The global variable .
The this function is creating ,
A file using a cool trick , it takes the username variable
string and converts the name strings in ASCII and takes there sum , the make a “.txt” file
of that numeric sum .
it also makes a database of registered users.
The login takes in the username and password
Then Opens the file
And fetches the data from the file created during the registration phase
Remember that database we created during the run time That is being printed here . Using Enums , the online status is being addressed .
Lists the users active , you will type there username to add them
Now here is one of the cool parts . The username we entered at login And this username of a friend Gets converted into ASCII value and added .
Why are we doing this ?
Well believe or not this is an two way chatting app that works
So what if I add josh my friend . Then my name moeez + josh will make a file joshmoeez.txt And on doing the opposite we will get a file Moeezjosh.txt
In order to always open the same file when 2 same users are chatting over the network we , convert the string into numbers to get a unique but consistent file name .
A file saved the list of friends each user has . Then only prints those users form the network . Using the same numeric file logic defined above that unique files is being used . And to store messages from both sides .
Then we are simply printing that numeric named text file to get the chat
Which is being active , instantly in between devices.
Now how are we chatting in between the devices ?
We are using a magical software , called the Google Drive Desktop
Which is acting as our server.