ex6.c

/*
 * 6. You don’t need to use an array to generate Fibonacci numbers. You can
 * simply use three variables: two to store the previous two Fibonacci numbers
 * and one to store the current one. Rewrite Program 6.3 so that arrays are not
 * used. Because you’re no longer using an array, you need to display each
 * Fibinacci number as you generate it.
 *
 * By Faisal Saadatmand
 */

#include <stdio.h>

int main(void)
{
	int FibCurrent, FibPrevious1, FibPrevious2, i;

	FibPrevious1 = 0;    /* by definition */
	FibPrevious2 = 1;    /* by definition */

	printf("%i\n%i\n", FibPrevious1, FibPrevious2);

	for (i = 2 ; i < 15; ++i) {
		FibCurrent   = FibPrevious1 + FibPrevious2;
		printf("%i\n", FibCurrent);
		FibPrevious1 = FibPrevious2;
		FibPrevious2 = FibCurrent;
	}

	return 0;
}