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Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: Beginner
Jan 28, 2000

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float or double?

For most uses, double is the default floating-point data type to be used. Variables of type double offer higher accuracy and minimize truncation and deviation to a minimum. This is why most of the functions and algorithms in the Standard Library take and return double. In general, the float data type should be used only when memory is scarce or when using double instead of float imposes considerable processing overhead.

Danny Kalev
 
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