Merge pull request #721 from Garvsharma-codes/js-guess-number-game

Add "Guess the Number" CLI game

Author: ghostmkg

JavaScript Code for Guess the Number/GuessTheNumber.js

@@ -0,0 +1,58 @@
+/**
+ * Simple Command-Line "Guess the Number" Game in JavaScript (Node.js)
+ *
+ * The computer picks a random number between 1 and 100. The player
+ * tries to guess it, and the computer provides hints ("Too high!" or
+ * "Too low!") until the player guesses correctly.
+ */
+
+// To read user input
+const readline = require('readline').createInterface({
+    input: process.stdin,
+    output: process.stdout
+});
+
+// 1. Generate the random number (between 1 and 100)
+const targetNumber = Math.floor(Math.random() * 100) + 1;
+
+// 2. Initialize the attempts counter
+let attempts = 0;
+
+/**
+ * The main game loop function.
+ * It recursively asks the user for a guess until they get it right.
+ */
+function askGuess() {
+    readline.question('Guess a number between 1 and 100: ', (input) => {
+        const guess = parseInt(input);
+
+        // 3. Input Validation
+        if (isNaN(guess) || guess < 1 || guess > 100) {
+            console.log('Invalid input. Please enter a number between 1 and 100.');
+            askGuess(); // Ask again without counting it as an attempt
+            return;
+        }
+
+        // Valid guess, increment attempt counter
+        attempts++;
+
+        // 4. Feedback Logic
+        if (guess < targetNumber) {
+            console.log('Too low! Try again.');
+            askGuess(); // Recursive call for the next guess
+        } else if (guess > targetNumber) {
+            console.log('Too high! Try again.');
+            askGuess(); // Recursive call for the next guess
+        } else {
+            // 5. Win Condition
+            console.log(`\n🎉 Correct! The number was ${targetNumber}.`);
+            console.log(`You guessed it in ${attempts} attempts!`);
+            readline.close();
+        }
+    });
+}
+
+// Start the game
+console.log('--- Welcome to Guess the Number! ---');
+console.log("I'm thinking of a number between 1 and 100...");
+askGuess();