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Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: All
Nov 12, 1999

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The Underlying Type of bool and wchar_t

It is guaranteed that sizeof(char), sizeof(signed char) and sizeof(unsigned char) all equal 1. Applying sizeof to any other fundamental type returns an implementation-defined value. In particular, sizeof(bool) and sizeof(wchar_t) need not return 1 because their underlying types may be larger than char.

Danny Kalev
 
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