C# arithmetic

See here for a short interactive tutorial about number-arithmetic in C#

Of course, arithmetic in C# is similar to any other language. 

Here's something to think about: Normally, if we divide & multiply by the same number, we get back the variable. For example:

(c / a) * a 

Would evaluate to c itself.

However, there are some situations in which this is not true. It will not evaluate to c

What do you think? Write the situations that come to your mind below.

 Next, we look at control structures and a small optimization problem

Comments

Post a Comment

Popular posts from this blog

Relationships in a Relational Database

Image
A Relational Database models data in the form of tables and relation between tables. Consider the following application: When a customer asks a question about an equipment, we want to connect to an expert who can answer. For example, an expert on Ultrasound is different from an expert on X-ray; and there are different experts in different countries. One way to model this data is to make a table with the equipment identifier and the contact of the expert. As you can see, there's a lot of redundancy; the expert's contact is replicated in multiple rows. Not only is this inefficient in terms of storage, but also multiple updates need to be done when there's a new expert. How could we solve this? Any identification we repeat will have the same redundancy. The answer is to remove redundancy - normalize the data. The best normalizations are the ones that reflect the real world. In this case, the equipment and the region are linked to the contact. So one way to organize th...
Read more

Data Schema and Blobs

The schema gives the organization of data. It says what the data means. In the previous example, the 'contact' column had the contact of a person and not an ID. That's what is given by a schema, in addition to the table-structure itself. Often, changes in schema require expensive migration - not only in the database, but also all applications that are using the database. As we saw in the previous example, we needed to change the country to an economic zone, but all zones were not ready to move at once. How can we reduce the burden of migration? Let's examine a few ways: Build some wrappers over the database. So when the structure of the database changes, we can still convert back to the old data. Retain the country and relate it to the region in a separate table: In this way, whoever needs the country can refer to that, and whoever needs the region will access it. This is a clever way that relies on modeling like the real world. Change the organization of the ...
Read more

Power On!

Welcome to this series of blogs. Let's do a review of our favorite languages! Looking for the next piece on Applications ^ Data? See here! These blogs are designed to trigger questions and discussions. It's not about being right or wrong. The purpose is to discover, know and develop. Feel free to leave comments, ask and answer questions, voice opinions and enjoy! Guideline : Please be respectful and welcoming of everyone's views and questions. You are now a part of our team :) Click here  to attempt the  assessment of this series Notes: - You can login using your gmail id . If you have provided us the gmail id already, it will succeed. - Otherwise, please write a mail from your gmail id to sudeep@rapalearning.com with subject Bootcamp access - Each lesson has an assessment. Each assessment can be submitted once. Here's is a sequence we suggest: Building block of polymorphism : Start here for a fun exercise to program an artillery firing sequence... in C...
Read more