C++_Unreal_Cours_1028

C++_Unreal_Cours_1028.cpp

#include <iostream>
#include <string>

using namespace  std;

void Exercise_While_Break()
{
	string password;

	while (true)
	{
		std::cout << "Enter a password : ";

		getline(cin, password);

		for (int i = 0; i < password.length(); i++)
			password[i] = tolower(password[i]);

		if (password == "exit") break;
	}
}

void Infant_Ado_Adult(int repeat = 2)
{
	string name;
	int age;

	for (int i = 0; i < repeat; i++)
	{
		cout << "User." << i + 1 << " Nom : ";
		getline(cin, name);

		cout << "User." << i + 1 << " Age : ";
		cin >> age;

		if (age < 13)
			cout << name << " " << age << "ans " << ": infant";
		else if (age < 19)
			cout << name << " " << age << "ans " << ": ado";
		else
			cout << name << " " << age << "ans " << ": adult";

		cin.ignore();
		cout << endl;
	}
}

void Exercise_For_If(int balance)
{
	int total_price = 0;
	int total_article = 0;

	cout << "How many items did you buy ? ";
	cin >> total_article;

	for (int i = 1; i <= total_article; i++)
	{
		string nom;
		int price, quantity;

		cout << i << ". What did you buy ? (name price quantity)" << endl;
		cin >> nom >> price >> quantity;

		total_price += (price * quantity);

		cout << endl;
	}
	cout << "Total price is $" << total_price << "\n\n";

	cout << "<<I try to pay with my debit card...>> \n\n";

	if (total_price >= balance)
		cout << "[Monitor] Sorry, not enough money" << endl;
	else
		cout << "[Monitor] It's done, $" << (balance - total_price) << " in your bank account" << endl;

}

void Exercise_While_SwitchCase()
{
	int total_move = 0;
	char direction;

	while (true)
	{
		cout << "Select action (W:↑ S:↓ A:← D:→ X:Quit) : ";
		
		cin >> direction;

		switch (toupper(direction))
		{
			case 'W': cout << "moving to the NORTH\n\n";
				total_move++;
				break;
			case 'S': cout << "moving to the SOUTH\n\n";
				total_move++;
				break;
			case 'A': cout << "moving to the WEST\n\n";
				total_move++;
				break;
			case 'D': cout << "moving to the EAST\n\n";
				total_move++;
				break;

			case 'X': cout << "Thank you for playing this game. You moved " << total_move << " times\n\n";
				return;

			default:
				cout << "[ERROR] Please retry\n\n";
				break;
		}
	}
}

void Exercise_PrimeNumber(int repeat)
{
	srand(time(NULL));

	for (int i = 0; i < repeat; i++)
	{
		int number = rand() % 100 + 2;
		bool isPrime;

		if (number == 1) continue;
		
		if (number == 2 || number == 3 || number == 5 || number == 7) 
			isPrime = true;
		else if (number % 2 == 0)
			isPrime = false;
		else if (number % 3 == 0)
			isPrime = false;
		else if (number % 5 == 0)
			isPrime = false;
		else if (number % 7 == 0)
			isPrime = false;
		else
			isPrime = true;

		cout << number << " is " << (isPrime ? "A" : "NOT a") << " Prime Number\n\n";
	}
}

int main()
{
	//Exercise_While_Break();

	//Infant_Ado_Adult(3);

	//Exercise_For_If(300);

	//Exercise_While_SwitchCase();
	
	Exercise_PrimeNumber(10);
}