Something about sizeof(char)

[Dhruv Matani]

Hi,
	Is there any way of knowing whether on a platform the sizeof(char)
being always one is actually one byte == 8-bits? Or 1 is defined as more
than 8-bits.

The reason I'm asking this is because if it can be found out, then the
find_first_of, and the similar class of algorithms for basic_string can
be implemented having complexity O(n + m), where:
n -> Size of input string.
m -> Size of search string.

-- 
        -Dhruv Matani.
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