#include <stdio.h>
/*
 * prototype (forward declaration)
 */
int power(int m, int n);
/*
 * generate a table of powers of 2
 */
void main(void)
{
	register int i;				/* counter in a for loop */
	/*
	 * generate the table
	 */
	for(i = 0; i < 10; ++i)
		printf("%3d %6d %6d\n", i, power(2, i), power(-3, i));
	
	/*
	 * bye!
	 */
	exit(0);
}
/*
 * compute a power
 *
 * arguments: 			int base		what you want to raise
 *	   		int n		non-negative integral power
 *					to raise base to
 *
 * returns:			base ^ n (base ** n to you FORTRANers!)
 *
 * exceptions:			none handled; overflow may occur, but there
 * 			will be no indication of it
 */
int power(int base, int n)
{
	register int i;			/* counter in a for loop */
	register int p;			/* resulting power */
	/*
	 * do it the obvious, multiplicative, way
	 */
	for(i = 1, p = 1; i <= n; i++)
		p *= base;
	return(p);
}