When do you use "if ( a = b )"? (was Re: Funny mistake)

[Eric Bardes]

A typical usage, though slightly more hidden, of ( a = b ) in a conditional
expression would be this:

	char *a, *b;

	while (*a++ = *b++)   /* empty */ ;

This example copies from string b to string a include the null character.
Note the while loop has no body.

Eric