Introduction
of C#
A Program need
to be written a specific language it is called programming language . So C# is
one of programming language.
Compiler
It is a Program
that process instruction written in a programming language and translate to
machine language.
Class in C#
It is group of
object having some behavior every object belong to a particular class. In a
class object communicate with each other by passing messages.
Mathod in C#
Is a set of one
or more program statement which can be execute by referencing to the method
name.
What is Object
in C#
Is a Combination
of massage or data (is thing which can be easily identify).
What is Main
method in C#
You must include
a Main() method in a class to make program executable. This is the Entry point
of your program. The execution of program always start from Main.
A Program
Print Hello word in C#
using
System;
class
HelloPrint
{
static
void Main()
{
Console.WriteLine("Hello");
}
}
Output
Hello
Variable in C#
It is storage area of Program. Variable is Location in the Memory that have a
name and contain a value. There are two types of variable.
-
Value type.
-
Reference
type.
Data Type in
C#
It is the type
of data (variable) store in that location data type in c#. following types of
data types.
-
Char
- 2 byte store any character.
-
Int -
4 byte store any integer value.
-
Float
- 4 byte store decimal value.
-
Double
- 8 byte store decimal value.
-
Bool
-1 bit store Boolean value.
A Program
that accept a Name and Display a Welcome Message
using
System;
Class WelcomMsg
{
static
void Main()
{
string
Name;
Console.WriteLine(Enter a
Name");
Name=Console.ReadLine();
Console.WriteLine("Welcom!"+Name);
}
}
What is Using keyword in C#
The Using
keyword is used to include namespaces in the program. The statement
Using System;
declare that you
refer to the class define in the System name spaces.
Class Keyword
The class
keyword is used to declare a class. In the preceding code, the class keyword
define the print welcome Message.
ReadLine Mathod in C#
The ReadLine()
method is used to accept input from user. The console.ReadLine() method, by
default accept the data in the string format. If you want to store the data in
any other format you need to convert the data type of the data provided by the
user.