Data Transformation :

•    Programs transform data from one form to another 
•    Input data - Output data 
•    Stimulus - Response
•    Programming languages store and process data in various ways depending on the         type of the data; consequently, all data read, processed, or written by a program             must have a type
•    Two distinguishing characteristics of a programming language are the data types it       supports and the operations on those data types 

 Data types:

•    C is rich in its data type. 
•    Variety of data type allows programmer to select appropriate data type as per need 
•    ANSI supports 3 classes of data type 

1.     Primary or fundamental data type 

2.     Derived data type 

3.     User defined data type. 

 Data types in C:

DATA TYPES:-

1.Primitive-

• Char
• Int
• Float
• Double
• Void

2.Derivied-

• Arrey
• Pointer
• Function

3.User defined-

• Enum
• Structure
• Union