Data type, Basic Computer Science

Data Type:

 Data Type: Anything that is processed by a computer is called data. There are different types of data that can be given to the computer for processing. A  data type is a classification identifying the typeof data.  It determines the   

  • Possible values for that type,   
  • Operations that can be performed on values of that type,   
  • The way values of that type can be stored in memory,  

In each programming language there are some primitive data types. For example in the C programming language they are:  Please note that these sizes can be compiler or machine dependent in the case of this language.  For other languages such as Java, the sizes are defined by the language itself.   

  • int, both signed and unsigned integers,  2 bytes in size.    
  • float, floating point numbers, up to 4 bytes in size.    
  • double, floating point number with double precision. These are organized in  8 bytes (64 bits)    
  • char, character type  size of 1 byte (8 bits)  It is used to form the strings i.e sequence of characters.  

 

Posted Date: 10/23/2012 3:48:38 AM | Location : United States







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