Size of char on a 64 bit machine

From: aruna (arunal2001_at_yahoo.co.in)
Date: 04/28/04 

Date: 28 Apr 2004 08:53:56 -0700

How is a character stored in a word aligned machine? Assuming on 64bit
machine, 1 byte is reserved for a char, is it the case that only 1
byte is used to store the character and the rest 7 bytes are wasted,
or my assumption is wrong? If my assumption is right, what are the
performance issues in retrieving value of a character variable over
other data types like integer, double or float.

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