working socket integration

examples/interactive_calculator.js

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+// Interactive Calculator Example
+// This demonstrates how the interactive input/output works
+
+const readline = require('readline');
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+});
+
+function calculator() {
+  console.log("Welcome to the Interactive Calculator!");
+  console.log("Enter 'q' to quit at any time.");
+  
+  function promptUser() {
+    rl.question("Enter an expression (e.g., 2 + 3): ", (expression) => {
+      if (expression.toLowerCase() === 'q') {
+        console.log("Thank you for using the Interactive Calculator!");
+        rl.close();
+        return;
+      }
+      
+      try {
+        // Safely evaluate the expression
+        const result = eval(expression);
+        console.log(`Result: ${result}`);
+      } catch (e) {
+        console.log(`Error: ${e.message}`);
+        console.log("Please try again with a valid expression.");
+      }
+      
+      // Continue prompting
+      promptUser();
+    });
+  }
+  
+  // Start the prompt loop
+  promptUser();
+}
+
+// Run the calculator
+calculator();