Basic programs on c#

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Feedback will be sent to Microsoft: By pressing the submit button, your feedback will be used to improve Microsoft products and services. Privacy policy. Welcome to the introduction to C tutorials. These lessons start with interactive code that you can run in your browser. You can learn the basics of C from the C video series before starting these interactive lessons.

The first lessons explain C concepts using small snippets of code. You'll learn the basics of C syntax and how to work with data types like strings, numbers, and booleans. It's all interactive, and you'll be writing and running code within minutes. These first lessons assume no prior knowledge of programming or the C language.

Learn the basic syntax and thought processes required to build simple applications using C. Once you complete this learning path, you will have a great foundation to build upon in subsequent C Learning Paths.

Use data in your applications by creating literal values and variable values of different data types. Combine literal and variable text data that are filled with special characters, formatting, and Unicode into meaningful messages for the end user. Use functionality in the. NET Class Library by calling methods that return values, accept input parameters, and more.

Work with sequences of related data in data structures known as arrays. Then, learn to iterate through each item in the sequence. Next Topic Fibonacci Series in C. Reinforcement Learning.

R Programming. React Native. Python Design Patterns. Python Pillow. Python Turtle. Verbal Ability. Interview Questions. Company Questions. Artificial Intelligence. The following code is a typical switch statement. The switch expression is a random number between 1 and 9 and based on the value of the expression, a case block is executed. WriteLine "Case 1" ; break ; case 2: Console. WriteLine "Case 2" ; break ; case 3: Console.

WriteLine "Case 3" ; break ; default : Console. C for Statement The for statement also knows as the for loop executes a block of code. Syntax of for loop: for initializer; condition; iterator statement This code is the simplest example of a for loop. In this code, the variable counter is initialized to value 0. The code block displays the value of counter to the console. WriteLine "for loop Sample!

WriteLine counter ; Console. The following code snippet starts a loop from 10 to less than in increments of The following code blocks checks for the even numbers between 10 and C foreach Statement The foreach statement is used to iterate through a collection of items such as an array.

We will discuss arrays and collections later in this book. The following code creates an array of odd numbers and uses foreach loop to loop through the array items and read them. WriteLine "foreach loop Sample! The following code continues a loop until the counter is less than WriteLine "do.. C while Statement The while statement executes a block of code until the specified while condition is false. C go to Statement The goto statement is used when you need to jump to a particular code segment.

The following code uses a goto statement to jump from one case block to another once a condition is met. The program reads a string from the console. WriteLine "Hello World! WriteLine "What is your name? WriteLine "My name is Mahesh. WriteLine "Chand is my last name. WriteLine "My name is Neel. C break Statement The break statement exits from a loop or a switch immediately. The break statement is usually applicable when you need to release control of the loop after a certain condition is met, or if you want to exit from the loop without executing the rest of the loop structure.

You use it in for, foreach, while, and do. The following code shows the break statement. C continue Statement Similar to the break statement, the continue statement also works in for, foreach, while, and do. The continue statement causes the loop to exit from the current iteration and continues with the rest of the iterations in the loop.

C return Statement The return statement returns from a method before the end of that method is reached. The return statement can either a value or not, depending on the method that calls it. The following code is an example of a return statement. The execution goes to the caller program of the method. C Interface An interface is a blueprint that an implementing class or struct must implement.

An interface contains only the signatures of its members. Interfaces are used by library and component developers when certain blueprint of the classes or structs must be followed by the implementing developers. An interface has the following properties: Any class or struct that implements the interface must implement all its members.

An interface can't be instantiated directly. Its members are implemented by any class or struct that implements the interface. Interfaces can contain events, indexers, methods, and properties. Interfaces contain no implementation of methods. A class or struct can implement multiple interfaces. A class can inherit a base class and also implement one or more interfaces. The corresponding member of the implementing class must be public, non-static, and have the same name and signature as the interface member.

Interfaces can also have base interfaces and an interface can inherited from more than one base interfaces. Learn more here: Interface In C C Partial Class Partial classes were introduced in C 2 that allows developers to split a class into multiple physical files.

Partial classes come handy in large projects and a class size is too large and functionality is distributed among multiple members in a team. In large projects, multiple team members work on same area of functionality. The UI has ton of functionality where multiple developers needs to work on the same window functionality.

One developer will create the user interface, change design and layout, while other two developers may work on the database and business logic functionality. We can easily separate the window code into three physical partial classes and each developer can work on a separate class.

Here are static classes properties. A static class cannot be instantiated. That means you cannot create an instance of a static class using new operator. A static class is a sealed class. That means you cannot inherit any class from a static class. A static class can have static members only.

Having non-static member will generate a compiler error. A static class is cannot contain instance constructors. A static constructor is only called one time, and a static class remains in memory for the lifetime of the application domain in which your program resides.

Learn more here: Static Class In C C Abstract Class The purpose of an abstract class is to define a blueprint of derived classes. Abstract classes do not have any implementation. The classes that are inherited from an abstract class implements the class functionality. Here are the key characteristics of abstract classes: An abstract class cannot be instantiated.

A class may inherit one abstract class only. An abstract class may contain abstract methods, properties, and events. A derived from an abstract class must implement all inherited abstract methods and accessors. Learn more here: Abstract Class In C C array An Array in C is a collection of objects or types.

C Array elements can be of any type, including an array type. An array can be Single-Dimensional, Multidimensional or Jagged. A C Array can be can be declared as fixed length or dynamic. An Array in C can be a single dimension, multi dimension, or a jagged array.

Learn how to work with arrays in C. In C , an array index starts at zero. That means the first item of an array starts at the 0 th position. The position of the last item on an array will total number of items - 1. So if an array has 10 items, the last 10 th item is at 9 th position. In C , arrays can be declared as fixed length or dynamic.