Computer Science - Object Oriented Programming Using C++ - Discussion

44. 

The most efficient data type for a variable that stores the number 4.6e20 is the _____ data type

[A]. Character
[B]. Double
[C]. Float
[D]. Long Integer
[E]. Short Integer

Answer: Option C

Explanation:

No answer description available for this question.

Niranjan said: (Jul 18, 2011)  
Why can't we use double here?

Rashmi said: (Apr 8, 2015)  
Can any one please explain how it works?

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