Question

52 карты в колоде разложены по мастям в порядке двойка, тройка, ..., валет, дама, король туз. Порядок мастей - бубновые карты, червовые карты, трефовые карты, пиковые карты. По вводимому порядковому номеру, используя оператор case, вывести название карты. Учесть возможность ввода некорректных данных

Answer 1

//название
var n: integer;
begin
repeat
n:=readinteger('Введите порядковый номер: ');
until n in [1..52];

case (n mod 13) of 
1: write ('Двойка');
2: write ('Тройка');
3: write ('Четверка');
4: write ('Пятерка');
5: write ('Шестерка');
6: write ('Семерка');
7: write ('Восьмерка');
8: write ('Девятка');
9: write ('Десятка');
10: write ('Валет');
11: write ('Дама');
12: write ('Король');
0: write ('Туз');
end;
if n mod 13<>0 then n:=(n div 13) + 1 else n:=n div 13;

case n of
1: write (' бубен');
2: write (' черви');
3: write (' трефы');
4: write (' пики');
end;

end.

Answer 2

Understanding the Problem

The problem is asking us to write a program that will take a numerical input representing the position of a card in a deck of 52 cards and output the corresponding card's name. The cards are ordered by suits (clubs, hearts, diamonds, spades) and within each suit, they are ordered from 2 to 10, followed by the Jack, Queen, King, and Ace.

Solution Approach

To solve this problem, we can use a switch-case statement in the programming language of our choice. We will take the input number and match it with the corresponding card name based on the given order of suits and card values.

Solution Steps

Here are the steps to solve the problem:

1. Take the input number representing the position of the card. 2. Use a switch-case statement to match the input number with the corresponding card name. 3. Handle the case for incorrect input numbers to provide an appropriate error message. 4. Output the corresponding card name based on the matched case.

Example Solution (in Python)

Here's an example solution in Python:

def get_card_name(position):
    suit_order = ['clubs', 'hearts', 'diamonds', 'spades']
    value_order = ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'Jack', 'Queen', 'King', 'Ace']

suit_index = (position - 1) // 13
    value_index = (position - 1) % 13

suit = suit_order[suit_index]
    value = value_order[value_index]

return f'{value} of {suit}'

# Test the function
position = int(input("Enter the position of the card (1-52): "))
if position < 1 or position > 52:
    print("Invalid input. Please enter a number between 1 and 52.")
else:
    card_name = get_card_name(position)
    print("The card at position", position, "is", card_name)

Explanation of the Solution

1. The `get_card_name` function takes the position of the card as input. 2. The `suit_order` list represents the order of suits: clubs, hearts, diamonds, spades. 3. The `value_order` list represents the order of card values: 2, 3, 4, ..., 10, Jack, Queen, King, Ace. 4. The `suit_index` is calculated by dividing `(position - 1)` by 13 and using integer division (`//`) to get the quotient. 5. The `value_index` is calculated by taking `(position - 1)` modulo 13 to get the remainder. 6. The `suit` is obtained by indexing the `suit_order` list using `suit_index`. 7. The `value` is obtained by indexing the `value_order` list using `value_index`. 8. The function returns the card name in the format `value of suit`. 9. The program prompts the user to enter the position of the card. 10. If the input is not within the valid range (1-52), an error message is displayed. 11. Otherwise, the `get_card_name` function is called with the input position, and the card name is printed.

Example Usage

Here's an example usage of the program:

Enter the position of the card (1-52): 25
The card at position 25 is 9 of hearts

Handling Incorrect Input

The program checks if the input number is within the valid range (1-52). If the input is less than 1 or greater than 52, an error message is displayed:

Enter the position of the card (1-52): 0
Invalid input. Please enter a number between 1 and 52.

Enter the position of the card (1-52): 53
Invalid input. Please enter a number between 1 and 52.

This ensures that the program handles incorrect input gracefully.

Please note that the provided solution is just one way to solve the problem. There may be alternative approaches or variations depending on the programming language used.