diff options
Add files via upload
1 files changed, 155 insertions, 0 deletions
| -rw-r--r-- | pract KN/week7/solution/game.cpp | 155 |
diff --git a/pract KN/week7/solution/game.cpp b/pract KN/week7/solution/game.cpp new file mode 100644 index 0000000..18833f4 --- /dev/null +++ b/pract KN/week7/solution/game.cpp @@ -0,0 +1,155 @@ +#include "game.h"
+#include<iostream>
+#include<time.h>
+#include<cmath>
+#include<windows.h>
+
+void game::generateNumber() {
+ srand(time(NULL));
+
+ number = rand() % 100 + 1;
+}
+
+void game::validateBet(double& bet, double currentMoney) const {
+ std::cout << "How much money would you like to bet? " << std::endl
+ << "Your money now: " << currentMoney << std::endl;
+
+ bool fail = false;
+
+ do {
+ if (fail)
+ std::cout << "Invalid input" << std::endl;
+
+ std::cin >> bet;
+
+ fail = true;
+
+ // Проверява дали сме въвели текстов низ вместо число
+ // и поправя потока.
+ if (!(bool)(std::cin)) {
+ std::cin.clear();
+ std::cin.ignore(255, '\n');
+ }
+
+ } while (bet > currentMoney || bet < 0);
+}
+
+void game::validateNumber(int& num) const {
+ std::cout << "Enter your number: ";
+
+ bool fail = false;
+
+ do {
+ if (fail)
+ std::cout << "Try again" << std::endl;
+
+ std::cin >> num;
+
+ if (!(bool)(std::cin)) {
+ std::cin.clear();
+ std::cin.ignore(255, '\n');
+ }
+
+ fail = true;
+
+ } while (num < 20 || num > 60);
+}
+
+double game::getRate(betType currentBet) const {
+ double rate = 0;
+ int myNumber = 0;
+
+ switch (currentBet) {
+ case betType::isEven:
+ rate = !(number % 2) ? 0.2 : -1;
+ break;
+ case betType::isNotEven:
+ rate = !(number % 2) ? -1 : 0.2;
+ break;
+ case betType::isPrime:
+ rate = isPrime(number) ? 0.5 : -1;
+ break;
+ case betType::isPowerOfTwo:
+ rate = isPowerOfTwo(number) ? 1 : -1;
+ break;
+ case betType::isBiggerThan:
+ validateNumber(myNumber);
+ rate = (myNumber > number) ? 0.25 : -1;
+ break;
+ case betType::isSmallerThan:
+ validateNumber(myNumber);
+ rate = (myNumber < number) ? 0.25 : -1;
+ break;
+ case betType::isTheSameAs:
+ validateNumber(myNumber);
+ rate = (myNumber == number) ? 10 : -1;
+ break;
+ }
+
+ return rate;
+}
+
+void game::play(player& p) {
+ if (p.getAge() < 18) {
+ std::cout << "You are too young" << std::endl;
+ return;
+ }
+
+ char buff[20];
+ std::cout << "Enter your password, " << p.getName() << ": ";
+ std::cin.getline(buff, 20, '\n');
+
+ if (!p.comparePassword(buff)) {
+ std::cout << "Wrong password. Goodbye.";
+ return;
+ }
+
+ while (!p.isBroke()) {
+ double myBet = 0;
+
+ betType currentBet = p.makeBet();
+
+ generateNumber();
+
+ validateBet(myBet, p.getMoney());
+
+ p.updateMoney(myBet, getRate(currentBet));
+
+ std::cout << "The number was: " << number << std::endl;
+ }
+
+ std::cout << "You lost all your money!" << std::endl;
+}
+
+
+// Bonus:
+// https://math.mit.edu/~stevenj/18.335/newton-sqrt.pdf
+double newtonSquareRoot(double num, int l = 100) {
+ double result = 1;
+ double temp = 1;
+
+ for (int i = 0; i < l; i++) {
+ temp = 0.5 * (result + num / result);
+
+ if (temp == result && result != 1)
+ return result;
+
+ result = temp;
+ }
+
+ return result;
+}
+
+bool isPrime(int num) {
+ // int border = sqrt(num); is fine
+ int border = newtonSquareRoot(num);
+
+ for (int i = 2; i <= border; i++)
+ if (num % i == 0)
+ return false;
+ return true;
+}
+
+bool isPowerOfTwo(int num) {
+ return num != 0 && ((num & (num - 1)) == 0);
+}
\ No newline at end of file |