types of data

types of data

1. integer data types

   • whole numbers
   • can be stored
     • memory alocated

2. floating point numbers

   • to big or to small
     • decimal numbers
   • mantissa and exponent
     • mantissa hold all the digits
     • exponent power of 10

3. character data types

   • alphanumerical text
     • letters
     • numbers
     • spaces
     • symbols
     • punctuation
   • character variable or constants
     • single letter
     • number
     • symbol
     • held in one byte
   • characters
     • character fields
       • not used in math calculation
         • names
         • addresses
         • telephone
         • postcodes

4. string data type

   • symbols
   • values
   • maximum length 255 characters