4.1 Ask for Player Input

With a clear guide, we can now tackle the first step.

In the first step:

_{💻 C#}

// Player chooses to play with odds or evens.

To complete this step we need:

1. A way to ask for player input.
2. A way to represent their choice - odds or evens - in code.

Programming languages don’t understand what is odds or evens. A common approach is to assign numbers instead: 1 for odds and 2 for evens.

Asking for input is usually a bit more advanced, so we’ll use a helper function from the Game Utilities. It defines two parameters to accept a valid range of numbers:

_{💻 C#}

// Accepts a number between 1 and 2.
GameInput.Number(1, 2);

The function only receives input. It doesn’t explain to the player what to write. This means we need to print a message before asking for input.

The GameUtilities include a function to print messages formatted for input requests:

_{💻 C#}

GamePrint.Input("Choose a number between 1 and 2");
GameInput.Number(1, 2);

_{🖨️ Console}

--> Choose a number between 1 and 2:
1

⚠️ The input function pauses the program control flow until the player enters valid input.

✅ What to Do

• Use GamePrint.Input to print the message Choose 1 for Odds or 2 for Evens.
• Use GameInput.Number to ask the player to choose the number 1 or 2.
• Run the program.

🎯 Expected Outcome

_{🖨️ Console}

+--------------------------------+
+-- Welcome to Odds and Evens! --+
+--------------------------------+

--> Choose 1 for Odds or 2 for Evens:
1

    // Player chooses to play with odds or evens.
++  GamePrint.Input("Choose 1 for Odds or 2 for Evens");
++  GameInput.Number(1, 2);

GamePrint.Box("Welcome to Odds and Evens!");

// Player chooses to play with odds or evens.
GamePrint.Input("Choose 1 for Odds or 2 for Evens");
GameInput.Number(1, 2);

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