ref: 5c6b3fbacb558ee79ca05077d12ef7a1ef3b46ea drpc/drpc.c -rw-r--r-- 2.4 KiB View raw
                                                                                
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/**
 * Copyright 2019 dax <dax@dax.moe>
 * 
 * Permission to use, copy, modify, and/or distribute this software for any 
 * purpose with or without fee is hereby granted, provided that the above 
 * copyright notice and this permission notice appear in all copies.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 **/

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define MIN(a,b) ((a < b) ? a:b)

enum {
	PLAT,
	GOLD,
	SILVER,
	BRONZE,
	TIN,
};

int value[5] = {10000, 2500, 500, 100, 25};

int
main(int argc, char **argv)
{
	int pieces[5] = {0,0,0,0,0};
	int donate[5] = {0,0,0,0,0};
	int cap;
	double rate;
	const char *usage = "usage: drpc [-p platinum] [-g gold] [-s silver] [-b bronze] [-t tin] cap rate";

	int opt;
	while ((opt = getopt(argc, argv, "hp:g:s:b:t:")) >= 0) {
		switch (opt) {
		case 'p':
			pieces[PLAT] = atoi(optarg);
			break;
		case 'g':
			pieces[GOLD] = atoi(optarg);
			break;
		case 's':
			pieces[SILVER] = atoi(optarg);
			break;
		case 'b':
			pieces[BRONZE] = atoi(optarg);
			break;
		case 't':
			pieces[TIN] = atoi(optarg);
			break;
		case 'h':
		default:
			fprintf(stderr, "%s\n", usage);
			exit(EXIT_FAILURE);
		}
	}

	argc -= optind;
	if (argc < 2) {
		fprintf(stderr, "error: too few arguments\n");
		fprintf(stderr, "%s\n", usage);
		exit(EXIT_FAILURE);
	} else if (argc > 2) {
		fprintf(stderr, "error: too many arguments\n");
		fprintf(stderr, "%s\n", usage);
		exit(EXIT_FAILURE);
	}

	cap = atoi(argv[optind]);
	rate = atof(argv[++optind]);

	for (int type = PLAT; type <= TIN; type++) {
		value[type] = (int)(value[type] * (rate/100));
		donate[type] = MIN((int)(cap / value[type]), pieces[type]);
		cap -= value[type] * donate[type];
	}

	printf("%d platnum\n", donate[PLAT]);
	printf("%d gold\n", donate[GOLD]);
	printf("%d silver\n", donate[SILVER]);
	printf("%d bronze\n", donate[BRONZE]);
	printf("%d tin\n", donate[TIN]);
	printf("%d remaining\n", cap);
	exit(EXIT_SUCCESS); 
}