Adding Datatype variables

ArcAngehlD

Hey , i'm currently creating a program for school which enables the user to enter the name and expected ticket price of a member into the program. the user can then view the information or erase it. We are required to add the ticket price together but I don't know how to add up datatypes. I would like help in doing so please. Thanks in advance.
N.B
An example would be

********************************
* Member name : daren blanc *
* Ticket price : 200 *
* *
* Member name : mcfabien Allen *
* Ticket price 200 *
* *
* Total cost : 400 *
********************************