feat: Implement basic calculator supporting +, -, *, /, % with exit on 'x' or 'X'

🧠 Logic:
- Continuously reads operator and two operands from user
- Performs the operation if valid, handles division by zero
- Exits loop if user enters 'x' or 'X'.

Signed-off-by: Somesh diwan <[email protected]>

Author: Someshdiwan

Section7ConditionalStatements/Practice/src/Calculator.java

@@ -3,15 +3,13 @@
 public class Calculator {
     public static void main(String[] args) {
         Scanner in = new Scanner(System.in);
-        // Take input from user till user does not press X or x
+
         int ans = 0;
         while (true) {
-            // take the operator as input
             System.out.print("Enter the operator: ");
             char op = in.next().trim().charAt(0);
 
             if (op == '+' || op == '-' || op == '*' || op == '/' || op == '%') {
-                // input two numbers
                 System.out.print("Enter two numbers: ");
                 int num1 = in.nextInt();
                 int num2 = in.nextInt();