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DATA TYPES









Each variable in C has an associated data type. Each data type requires different amounts of memory and has some specific operations which can be performed over it. Let us briefly describe them one by one( Click on Data Types to know more...:




1. 
   
   PRIMITIVE DATA TYPES/ Build In Data Types
   
   
   
   
   
   
   
   
   This is pre-defined Data types.These is a basic five data types. Every C compiler supports five primary data types:
   
   
   
   1. 
      

      Integer

      It is used for non-decimal values.Used to denote an integer type. int (2 byte) can store values from -32,768 to +32,767 int (4 byte) can store values from -2,147,483,648 to +2,147,483,647. If you want to use the integer value that crosses the above limit, you can go for “long int” and “long long int” for which the limits are very high. Syntax With Variable name :-int <-- name--="" variable=""> With Long : long int <-- name--="" variable=""> With Functions name:-int <--function-name--><--function-arg-->

      
      
   2. 
      

      Void

      As the name suggests, it holds no value and is generally used for specifying the type of function or what it returns. If the function has a void type, it means that the function will not return any value. Syntax void <--function-name--><--function-arg-->

   3. 
      

      Char

      Used to denote a character type. Like A-Z,a-z,0-9,A-z(ASCII),special character($,#,@,%,^,& etc...) Storage Size:1 byte | Range of Value 2⁸-1 Syntax With Variable name :-char <-- name--="" variable=""> With Functions name:-char <--function-name--><--function-arg-->

   
   
   
   
   
   
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      Float,Double

      It is used to denote a floating point type. .Used to denote an float type. Storage Size: 4 bytes | Range of Value -3.4E+38 to +3.4E+38 Syntax With Variable name :-float <-- name--="" variable=""> with Variable name: double <--variable name--=""> with Functions name : double <--function-name--><--function-arg--> With Functions name:- float <--function-name--><--function-arg-->

   
   
   
   
   
   
   5. 
      

      int *,float *,char *

      It is used Used to denote a pointer type. Syntax With Variable name :-float * /int */char * <-- name--="" variable=""> With Functions name : float */int */char * <--function-name--><--function-arg-->

   
   
   
   
   
   




2. 
   
   NON-PRIMITIVE DATA TYPES/ Derived Data Types
   
   
   
   
   
   
   
   
   
   That Data types name automatically suggest. This data types derived from using Build-In Data types
   
   
   1. 
      

      Arrays

      Arrays are sequences of data items having homogeneous values. They have adjacent memory locations to store values. Syntax With Variable name :-int <-- name--="" variable=""> [ Size ];

   
   
   
   
   
   
   2. 
      

      References

      Function pointers allow referencing functions with a particular signature.

   
   
   
   
   
   
   3. 
      

      Pointers

      These are powerful C features which are used to access the memory and deal with their addresses. Syntax With Variable name :-int * variable With function : int * <--function name--=""><--function--arguments-->

   
   
   
   
   
   
   
   




3. 
   
   User-Define Data types
   
   
   
   
   
   
   
   
   
   C allows the feature called type definition which allows programmers to define their identifier that would represent an existing data type. There are three such types:
   
   
   1. 
      

      Structure

      It is a package of variables of different types under a single name. This is done to handle data efficiently. "struct" keyword is used to define a structure. struct keyword used for creating Structure. Syntax struct <--structure-name--> {Structure body}; struct <--structure name--=""> variable name;

   
   
   
   
   
   
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      Union

      These allow storing various data types in the same memory location. Programmers can define a union with different members, but only a single member can contain a value at a given time. It is used for Syntax union <--union-name--> {union body}; union <--union-name--> variable name;

   
   
   
   
   
   
   3. 
      

      Enum

      Enumeration is a special data type that consists of integral constants, and each of them is assigned with a specific name. "enum" keyword is used to define the enumerated. Syntax enum <--enum-name--> { Enum body}; enum <--enum-name--> <--variable-name-->

   
   
   
   
   
   

Coding : Written Code(Primitive Data Type)

Contents		Practical Videos
Build In Data Types
Derived Data Types
User-Define Data Types	Structures
	Union
	Enum	SOON Comming