C# statements

C# statements are an executable part of the program it will perform some action. There are multiple types of statements.

•  Expression Statements.
•  Compound Statements.
•  Selection Statements.
•  Iterative Statements.
•  Jump Statements.

Expression Statements: 

An expression followed by a semicolon is called an expression statement.

Example:-

40 > 50;

d = 10 + 20 * 30;

M = N + 10 ;

x ? y : z ;

Compound Statement :

It is a combination of several expression statements. Compound Statement are grouped together in braces{}.

We can also call as Block Statement.

Example:-

{

int num1 =10, num2=20, sum;

sum = num1+ num2;

Console.WriteLine (sum);

Console.ReadLine();

}

 Selection Statements :

Selection Statements are used for decisions making purposes. Some examples of Selection statements. We will discuss briefly in the upcoming session.

• if
• if…else
• switch

 Iterative Statements :

If we need to perform a part of program many times then we will use loops. It is also called Loops. We will discuss briefly in the upcoming session.

• for loop.
• while loop.
• do-while loop.

Jump Statements :

Jump statements are used to transfer control from one location to another location in the program. We will discuss briefly in the upcoming session. 

• goto.
• continue.
• break.
• return.
• throw

 

C# Tutorial 3 - C# Variable | Variable Initialization | C# Data Type

Variable - 

A variable is a name that denotes a storage area used to store a data value that can be changed by our program.

 

Variable declaration rules -

1- They must not start with a digit.

2- Uppercase and lowercase are treated as unique.

3- We can not declare the keyword as a variable.

4- We can not use white space.

5- Variable names can be of any length.

Initialization of variables -

string stringVar = "Hello World!!";

int intVar = 100;

float floatVar = 10.2f;

char charVar = 'A';

bool boolVar = true;  

Data type -

It specifies the size and type of values that can be stored in variable. There are 2 types of data type.

C# Tutorial 2 - Comments in C#

Comment in C# is basically used for explaining programs and lines of code do. Comments are ignored by the compiler. There are three types of comments.

1- Single line comment - It is used for commenting the single line of code.

      // Single line Comment

 

2- Multi-line comment - It is used for commenting the multiple lines of code. 

      /* Multiple 

      line of code comment */

C# Program to explain the single line and multiline comments -

class Hello {    

    // Single Line Comment -- Function to print Message 

    public static void PrintMessage(string message) 

    { 

        Console.WriteLine (message); 

    }       

    // Main function 

    static void Main(string[] args) 

    {           

        /* Multiline Comment -- 

           Define a variable of 

           string type and assign 

           value to it*/

        string msg = "Study Cube Learning";           

        PrintMessage (msg);           // Calling function 

    } 

} 

3- XML Comment - It is used for commenting the multiple lines of code for better understanding the program does.

class Hello {    

/// <summary>

/// Method to show string message

///</summary>

///<pram name =“message”></param>

    public static void PrintMessage (string message) 

    { 

        Console.WriteLine (message); 

    }           

    static void Main(string[] args) 

    {           

        string msg = "Study Cube Learning";           

        PrintMessage (msg); 

    } 

} 

C# Tutorial 1 - Introduction | First C# Program | C# Tutorial for Beginners

C#-

C# is an object-oriented programming language developed by Microsoft Corporation.
It was developed by Anders Hejlsberg and his team during the development of .Net Framework.

The below reasons make C# a widely used professional language −

• It is a modern programming language.
• It can be compiled on a different different of computer platforms. 
• It is a general-purpose programming language
• It is an object-oriented programming language.
• Very easy to learn.
• It is a structured language.

Characteristics of C#-

• Simple
• Consistent
• Modern
• Object-oriented
• Type safe
• Compatible

Microsoft provides the below development tools for C# programming −
Visual Studio 2010, 2012, 2013, 2015, 2017, 2019 etc.

First C# Program example-

using System;
class Demo
{
    public static void Main()
    {
        Console.WriteLine("Hello world");
        Console.ReadLine();
    }
}