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(Thought question: ) Do you think that using float instead of double saves a significant amount of computer memory?

Answer:

No. For most programs using variables of type double will cost only a few extra bytes. This is insignificant in a program thousands of bytes long.


Floating Point Literals

Sometimes you need to explicitly ask for a single-precision float literal. Do this by putting a lower case 'f' or upper case 'F' at the end, like this:

      123.0f 
        
     -123.5F
   
-198234.234f 
  
 0.00000381F

Sometimes you need to explicitly ask for a double literal. Do this by putting a lower case 'd' or upper case 'D' at the end, like this:

      123.0d  
       
     -123.5D   

-198234.234d 
  
 0.00000381D

Remember, that without any letter at the end, a floating point literal will automatically be of type double.


QUESTION 9:

Do you think that the following is legal?

8912D