120 lines
2 KiB
C
120 lines
2 KiB
C
#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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static int nextInt(int size) {
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return rand() % size;
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}
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static bool cylinder[6];
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static void rshift() {
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bool t = cylinder[5];
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int i;
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for (i = 4; i >= 0; i--) {
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cylinder[i + 1] = cylinder[i];
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}
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cylinder[0] = t;
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}
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static void unload() {
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int i;
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for (i = 0; i < 6; i++) {
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cylinder[i] = false;
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}
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}
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static void load() {
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while (cylinder[0]) {
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rshift();
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}
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cylinder[0] = true;
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rshift();
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}
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static void spin() {
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int lim = nextInt(6) + 1;
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int i;
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for (i = 1; i < lim; i++) {
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rshift();
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}
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}
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static bool fire() {
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bool shot = cylinder[0];
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rshift();
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return shot;
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}
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static int method(const char *s) {
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unload();
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for (; *s != '\0'; s++) {
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switch (*s) {
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case 'L':
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load();
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break;
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case 'S':
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spin();
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break;
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case 'F':
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if (fire()) {
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return 1;
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}
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break;
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}
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}
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return 0;
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}
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static void append(char *out, const char *txt) {
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if (*out != '\0') {
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strcat(out, ", ");
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}
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strcat(out, txt);
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}
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static void mstring(const char *s, char *out) {
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for (; *s != '\0'; s++) {
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switch (*s) {
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case 'L':
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append(out, "load");
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break;
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case 'S':
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append(out, "spin");
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break;
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case 'F':
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append(out, "fire");
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break;
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}
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}
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}
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static void test(char *src) {
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char buffer[41] = "";
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const int tests = 100000;
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int sum = 0;
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int t;
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double pc;
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for (t = 0; t < tests; t++) {
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sum += method(src);
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}
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mstring(src, buffer);
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pc = 100.0 * sum / tests;
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printf("%-40s produces %6.3f%% deaths.\n", buffer, pc);
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}
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int main() {
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srand(time(0));
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test("LSLSFSF");
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test("LSLSFF");
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test("LLSFSF");
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test("LLSFF");
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return 0;
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}
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