C# Syntax


C# Syntax

C# syntax looks quite similar to the syntax of Java because both inherit much of their syntax from C and C++. The object-oriented nature of C# requires the high-level structure of a C# program to be defined in terms of classes, whose detailed behaviors are defined by their statements.

A sample C# Program to Explain Syntax





We Explained the above Program line by line:

 

Line 1: using System means that we can use classes from the System namespace.

Line 2: A blank line. C# ignores white space. However, multiple lines make the code more readable.

Line 3: namespace is used to organize your code, and it is a container for classes and other namespaces.

Line 4: The curly braces {} marks the beginning and the end of a block of code.

Line 5: class is a container for data and methods, which brings functionality to your program. Every line of code that runs in C# must be inside a class. In our example, we named the class Program.

NOTE:

Don't worry if you don't understand how using System, namespace, and class working here, Now think of it as something that (almost) always appears in your program, and that you will learn more about them later.

Line 7: Another thing that always appears in a C# program, is the Main() method.  Any code inside its curly brackets {} will be executed. You don't have to understand the keywords before and after Main. You will get to know them bit by bit while reading this tutorial.

Line 8: Console is a class of the System namespace, which has a WriteLine() method that is used to output/print text. In our example program, it will output "Hello World!".

If you omit the using System line, you would have to write System.Console.WriteLine() to print/output text.

Note: Every C# statement ends with a semicolon ;

C# is case-sensitive: "MyClass" and "myclass" has a different meaning.

Unlike Java, the name of the C# file does not have to match the class name, but they often do (for better organization). When saving the file, save it using a proper name and add ".cs" to the end of the filename. 

 


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