ppmm.c

/*
 * demonstrates the use of ++, --
 *
 * Matt Bishop, ECS 36A
 *
 * April 22, 2024
 *	first version
 */
#include <stdio.h>

/*
 * the program itself
 */
int main(void)
{
	int m;	/* integer that is incremented or decremented */
	int p;	/* used to hold vaue before or after m is altered */

	/* ++var */
	m = 7;
	printf("m = %d before; ", m);
	p = ++m;
	printf("p = ++m; p = %d, m = %d\n", p, m);

	/* var++ */
	m = 7;
	printf("m = %d before; ", m);
	p = m++;
	printf("p = m++; p = %d, m = %d\n", p, m);

	/* --var */
	m = 7;
	printf("m = %d before; ", m);
	p = --m;
	printf("p = --m; p = %d, m = %d\n", p, m);

	/* var-- */
	m = 7;
	printf("m = %d before; ", m);
	p = m--;
	printf("p = m--; p = %d, m = %d\n", p, m);

	/* all done! */
	return(0);
}

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

ECS 36A, Programming & Problem Solving Version of April 2, 2024 at 12:13PM

You can get the raw source code here.