Divide and C

[Blair P. Houghton]

In article <1991Mar27.185804.7221 at uunet.uu.net> karln!karln at uunet.uu.net (Karl Nicholas) writes:
>    EX: int array[10][10];
>        val = 24;
>        ++array[val/10][val%10];

ANS:    int array[10][10];              /* for example */
        int dividend, remainder;        /* to use as array indices */

	val = 24;			/* for example */

	dividend = val/10;
	remainder = val - val*dividend;	/* the definition of `%' */
	++array[dividend][remainder];	/* dividend more significant */

This depends on the fact that an integer division
takes even longer than two assignments, a multiplication,
a subtraction, and whatever hocus-pocus the compiler
uses when it sees variables in the array indices...

				--Blair
				  "Lawyer:  never ask a question to which
				   you don't already know the answer.
				   Programmer:  never ask a question to
				   which you do already know the answer..."