WHAT IS DATATYPE AND VARIABLE?

Abhishek Srivasatava

Total Post:70

Points:350
Posted by  Abhishek Srivasatava
C#  Variable 
C#
 249  View(s)
Ratings:
Rate this:
  1. Abhishek Srivasatava

    Post:70

    Points:350
    What is dataType and Variable?

    DataTypes


    DataType is the classification to identify the variable type like int , char, float , string etc.

    In C# datatype are classified into three types

    * Value types

    * Reference types

    * Pointer types

    Value type


    In this type we can directly assign the data to the variable.

    Below are the some of the example of value type :

    Integer :


    It is further divided  into signed and unsigned datatype

    Signed datatype are those datatype whose value can be negative.

    example :

    int : 32-bit signed integer type

    long : 64-bit signed integer type

    short : 16-bit signed integer type

    sbyte : 8-bit signed integer type 

    etc.


    Unsigned datatype are those datatype whose value can't be negative.

    ushort : 16-bit unsigned integer type

    ulong  : 64-bit unsigned integer type

    uint     : 32-bit unsigned integer type

    Byte    : 8-bit unsigned integer

    etc    

    syntax // int a=5;

    Character


    It is used to accept the input in text format

    char  16-bit Unicode character


    Floating type


    In this datatype , we can assign the decimal value to the variable.


    Reference type :


    In reference type , we provide the reference for the data stored in the variable.

    The Object is the keyword which is used to store the value in object type, we assigned any type of value like int , char , user defined etc.

    Conversion of value type to object type is called Boxing.

    Conversion of Object type to Value type is called UnBoxing.


    Variable


    Variable is the stored location of the data in the memory. It is used to retrieve or store temporary data while executing the program.

    Declaration for the variable

    //<Datatype> <Variable  name >

    How to define Variable Globally in C#?

    In c#, we can define variable globally by using Static concept.

    By using Static Keyword before the variable declaration , single memory will be allotted in the program. Irrespective of  the number of objects is created for the class.

      Modified On Sep-19-2016 07:10:09 AM

Answer

NEWSLETTER

Enter your email address here always to be updated. We promise not to spam!