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Archive for December, 2016

Char variable type

Monday, December 26th, 2016

C# language uses char variable type to store values of type character. The C# compiler allocates 16 bits (2 bytes) to store a char variable, which is similar to the ushort type. The char variable type can store integer value types ranging from 0 to 65535.… Read more

Int variable type

Monday, December 26th, 2016

A variable is a name that the compiler assigns to one or more memory location(s). When you declare a variable in a program, you have to specify its type and name. The type of a variable specifies the kind of values that the variable can store and the set of operations that the program can execute on variables.… Read more

Bit. Byte. Binary counting.

Monday, December 26th, 2016

I was explaining in a previous lesson that at the deepest level, computers store and process information only as two values, 0 and 1. These values are the smallest individual pieces of information inside a computer, and they are called bits.… Read more

Interacting with the Console

Monday, December 26th, 2016

This lesson will be based on things that we have not yet learned about, so it is not mandatory to fully comprehend it. However, at least a very basic understanding of the interaction with the Console is required, in order to continue explaining concepts in the following lessons.… Read more

Choosing significant variable names

Monday, December 26th, 2016

First of all, this is not a mandatory topic. You can name your variables whatever you like. However, you will soon come to understand that choosing significant variable names is a very good programming practice.

If you ask me, the term “generally accepted programming naming convention” is practically a joke.… Read more

C# keywords

Monday, December 26th, 2016

C# programming language defines a few keywords that have a special meaning for the compiler. When you chose your variables, classes, methods names, you must be careful to avoid using these C# keywords, or you will get compiler errors, and your program will not compile.… Read more

Declaring and initializing variables

Monday, December 26th, 2016

The next topic in our lessons will be declaring and initializing variables. What do those term mean?

As we already said in a previous lesson, declaring a variable means creating a new variable, by telling the compiler its type and its name.… Read more

Variable types

Sunday, December 25th, 2016

When you declare variables in your programs, you must indicate to the compiler the type and the name of the variables. There are many variable types and derivations of them. A type defines the amount of data a variable can store, and the set of operations the program can perform on those data.… Read more

Variables

Sunday, December 25th, 2016

If you want your program to perform useful actions, it has to store information. As you know, every time you run a program, the operating system loads the programs instructions into the computer’s memory. While running, your program stores values in the memory locations by using variables.… Read more

Semicolon character

Sunday, December 25th, 2016

If you look backwards to the few lessons we had so far, you will notice that we used a lot the semicolon character. This character has a special and important meaning in C#.

As you already know, a program is composed by a list of instructions that perform some actions.… Read more