feat: created new project

.gitignore

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+bin/
+build/

src/dice.c

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+#include "dice.h"
+#include <stdlib.h>
+
+int roll_die(struct roll_data data) {
+	int min = data.count;
+	int max = data.count * data.die - data.count;
+	return min + (rand() % max);
+}

src/dice.h

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+#ifndef DICE_H
+#define DICE_H
+
+enum die {
+	D4 = 4,
+	D6 = 6,
+	D8 = 8,
+	D10 = 10,
+	D12 = 12,
+	D20 = 20,
+	D100 = 100,
+	COIN = 2,
+};
+
+struct roll_data {
+	int count;
+	enum die die;
+};
+
+int roll_die(struct roll_data data);
+
+#endif // !DICE_H

src/interactive.c

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+#include "interactive.h"
+#include <stdio.h>
+
+void interactive() {
+	fprintf(stderr, "interactive mode not implemented\n");
+}

src/interactive.h

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+#ifndef DICE_INTERACTIVE_H
+#define DICE_INTERACTIVE_H
+
+void interactive();
+
+#endif // !DICE_INTERACTIVE_H

src/main.c

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+#include "dice.h"
+#include "interactive.h"
+#include "output.h"
+#include "parse.h"
+#include <stdbool.h>
+#include <stdlib.h>
+#include <time.h>
+
+int main(int argc, char *argv[]) {
+	srand(time(NULL));
+	int mod;
+	struct roll_data roll_data = { 1, D4 };
+	if (argc == 1) {
+		interactive();
+		return 0;
+	} else if (parse(argv[argc-1], &roll_data, &mod)) {
+		print_roll(roll_data, mod, roll_die(roll_data));
+		return 0;
+	} else {
+		print_help();
+		return 0;
+	}
+}

src/output.c

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+#include "output.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+static void print_mod(int mod) {
+	if (mod > 0) {
+		printf("+%d", abs(mod));
+	} else if (mod < 0) {
+		printf("%d", abs(mod));
+	}
+}
+
+void print_roll(struct roll_data data, int mod, int roll) {
+	printf("rolled: %dd%d", data.count, data.die);
+	print_mod(mod);
+	printf(" (%d", roll);
+	print_mod(mod);
+	printf(")");
+}
+
+void print_error(char const *error) {
+	fprintf(stderr, "format incorrect: %s\n", error);
+}
+
+void print_help() {
+	fprintf(stderr, "help not implemented\n");
+}

src/output.h

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+#ifndef DICE_OUTPUT_H
+#define DICE_OUTPUT_H
+
+#include "dice.h"
+
+extern void print_roll(struct roll_data data, int mod, int roll);
+extern void print_format_error(char const *error);
+extern void print_help();
+
+#endif // !DICE_OUTPUT_H

src/parse.c

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+#include "parse.h"
+#include <stdbool.h>
+#include <stdio.h>
+
+bool parse(char *die_arg, struct roll_data* o_data, int *o_mod) {
+	fprintf(stderr, "parse not implemented\n");
+	return false;
+}

src/parse.h

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+#ifndef DICE_PARSE_H
+#define DICE_PARSE_H
+
+#include <stdbool.h>
+struct roll_data;
+
+extern bool parse(char *die_arg, struct roll_data* o_data, int *o_mod);
+
+#endif // !DICE_PARSE_H
+