C# Programming videos | C# Part 5 - Variables and Data Types

Posted by Andrew Gould on 31 October 2014

This part of the Basic Programming in Visual C# series explains how to use variables - an integral part of any programming language. You'll learn how to declare a variable and choose its data type, how to assign values to and read from a variable and how to initialise a variable. You'll learn about working with different data types such as strings, numbers and dates and understand the importance of type-casting and converting data types.

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24 Aug 20 at 14:12

I noticed if the user enters a max age that is smaller than the min age, the message box returns a meaningless answer.


A) How can the code be amended to correct this?

B) Probably better if there's some data validation to prevent users entering a max age < min age.



25 Aug 20 at 07:04

Hi Duggie,

You could use an If statement to deal with this situation.  If statements are covered in the next video which you can see here https://www.wiseowl.co.uk/c-sharp/videos/c-sharp-basics/if-statements/

I hope that helps!

25 Aug 20 at 20:32