May 2010
Beginner to intermediate
551 pages
18h 34m
English
Content preview from Stephens' C# Programming with Visual Studio® 2010 24-Hour Trainer
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Making Choices
All of the code used in the lessons so far has been completely linear. The program follows a
series of steps in order with no deviation.
For example, a sales program could multiply a unit price by quantity desired, add several
items’ values, multiply to get sales tax and shipping costs, and calculate a grand total.
So far there’s been no way to perform different steps under different circumstances. For example,
the sales program couldn’t charge different prices for different quantities purchased or waive
shipping charges for orders over $100. It couldn’t even check quantities to see if they make sense.
So far a clever customer could order –1,000 items to get a huge credit!
In this lesson you learn how a program can make decisions. You learn how the program can
take different actions based on user inputs and other circumstances.
DECISION STATEMENTS
Programs often need to decide between two or more courses of action. For example:
If it’s before 4:00 PM, ship today. Otherwise ship tomorrow.
If the user enters an order quantity less than zero, make the user fix it.
If a word processor has unsaved changes, refuse to exit.
Calculate shipping based on order total: $5 if total < $20, $7.50 if total < $50, $10 if
total < $75, and free if total ≥ $75.
The basic idea is the same in all of these cases. The program examines a value and takes one
of several different actions depend ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.