03datatypes.txt

 DATATYPES:- The type of value which we can put in any variable. It specifies what maximum and minimum value can be given, what operation can be performed,what conditions can be applied.

Primary datatypes:
1. int:-
       i) number without decimal places.
       ii) The require two(in 32 bit machine) and four(in 64 bit machine).
       iii) Range-> -32768 to 32767
            Unsigned int range-> 0 to 65535(2 bytes)
            long int range-> 2,147,483,648 to 2,147,483,647(4 bytes)
        iv) Operations: +,-,*,/,%
        
2. float:-
       i) Numbers with decimal places.
       ii)They required 4 bytes in memory.
       iii)They give result upto 6 decimal places.
       iv)Range-> 3.4 X 10(-38)power to 3.4 X 10(-38)power
       v)Operations: +,-,*,/
       
3. double or long float:-
       i)Numbers with decimal places.
       ii)They require 8 bytes in memory
       iii)They give result upto 12 decimal places
       iv)Range-> 1.7 X 10(-308)power to 1.7 X 10(-308)power
       v)Operations->+,-,*,/
       
4. char:-
      i)Any single character which may include alphabets(A-Z,a-z),numbers(0-9) and special characters
      ii)They require 1 byte in memory.
      iii)Operation->+,-
      iv) Ranges
                 A TO Z -> 65 TO 90
                 a to z -> 97 to 122
                 '0' to '9' ->48 to 57
         ASCII :-> American Standard Code for International Interchange