How can I check if the user's session has expired or not?

Question

In my Airline Booking Program, I now wish to make a session timer.

I want to offer the user n minutes for booking, and then cancel booking if the user hasn't reached the last option till then...

So I wish to count the number of seconds taken during the data fill...

I think I have to use <chrono> for this, but I have no idea how to use it...

How can I create this timer?

Also, I want to print the time left in the session to end to be printed alongside in the console, n-executed time. How to display that?

Answer 1

as the user logs in save the time in a Session variable e.g. loginTime.
on each page load check if the current time - loginTime is greater than the timeout you want to set:
If true handle the expired session the way you prefere.
Else reset the login time assigning the current time to the loginTime variable.

Answer 2

You can create use JavaScript for that.
look at setTimeout and/or setInterval.

Answer 3

Sorry I thought you were doing a web interface...
The concept is the same.
have a look at time.h http://www.cplusplus.com/reference/ctime/

you can use a label to show the time value

Answer 4

@seamiki
But how will I increase it after every second?

Answer 5

@seamiki
JS in C++?
Is it possible?

Answer 6

@seamiki
Thank You very much!

Answer 7

@kinshuk did you write your code after seamiki advice.if yes then kindly give the link to your program.
well i did a program based on that but it not working properly.

https://code.sololearn.com/cpJA2R6nU1da/?ref=app

Answer 8

@NIKHIL
Mine's not working as well, yet...