Jaiden branch - Cases 5-7 Completed and Tested

src/main/java/com/zipcodewilmington/scientificcalculator/Arithmetic.java

@@ -0,0 +1,107 @@
+package com.zipcodewilmington.scientificcalculator;
+public class Arithmetic {
+
+    //fields
+    private double result; 
+
+    //constructor
+    //Sets the starting value for the calculation.
+    public Arithmetic(double initialValue) {
+        this.result = initialValue; 
+    }
+
+    //methods
+
+    //addtion
+    public Arithmetic add(double num) {
+        this.result = this.result + num;
+        return this; // returns the object itself, enabling chaining like add(5).multiply(2)
+    }
+
+    //subtraction
+    public Arithmetic subtract(double num) {
+        this.result = this.result - num;
+        return this;
+    }
+
+    //multiplication
+    public Arithmetic multiply(double num) {
+        this.result = this.result * num;
+        return this;
+    }
+
+    //division
+    public Arithmetic divide(double num) {
+        if (num == 0) {
+            throw new ArithmeticException("Denominator cannot be zero");
+        }
+        this.result = this.result / num;
+        return this;
+    }
+
+    //square root, tehcnically redunant but it's functional. 
+
+    public Arithmetic squareRoot(double num) {
+        this.result = Math.sqrt(num);
+        return this;
+    }
+
+
+    //power
+    public Arithmetic power(double num) {
+        this.result = Math.pow(this.result, num);
+        return this;
+    }
+
+    //modulo
+    public Arithmetic modulo(double num) {
+        this.result = this.result % num;
+        return this;
+    }
+
+    public Arithmetic sine() {
+        this.result = Math.sin(this.result);
+        return this;
+
+    }
+
+    public Arithmetic cosine() {
+        this.result = Math.cos(this.result);
+        return this;
+
+    }
+
+    public Arithmetic tangent() {
+        this.result = Math.tan(this.result);
+        return this;
+
+    }
+
+    public Arithmetic cosecant() {
+        this.result = (1/(Math.sin(this.result)));
+        return this;
+
+    }
+
+    public Arithmetic secant() {
+        this.result = (1/(Math.cos(this.result)));
+        return this;
+    }
+
+    public Arithmetic cotangent() {
+        this.result = (1/(Math.tan(this.result)));
+        return this;
+    }
+
+
+
+    //getResult() - will retrieve the final value after chaining
+    public double getResult() {
+        return this.result;
+    }
+
+}
+
+
+
+

src/main/java/com/zipcodewilmington/scientificcalculator/Calculator.java

@@ -0,0 +1,7 @@
+package com.zipcodewilmington.scientificcalculator;
+
+public class Calculator {
+
+
+
+}

src/main/java/com/zipcodewilmington/scientificcalculator/Console.java

@@ -1,32 +1,97 @@
 package com.zipcodewilmington.scientificcalculator;
 
+import java.util.InputMismatchException;
 import java.util.Scanner;
 
 /**
  * Created by leon on 2/9/18.
  */
 public class Console {
 
+    // Prints the given output without a newline character
     public static void print(String output, Object... args) {
         System.out.printf(output, args);
     }
 
+    // Prints the given output followed by a newline character
     public static void println(String output, Object... args) {
         print(output + "\n", args);
     }
 
+    // Gets a string input from the user
     public static String getStringInput(String prompt) {
         Scanner scanner = new Scanner(System.in);
         println(prompt);
         String userInput = scanner.nextLine();
         return userInput;
     }
 
+   // Gets an integer input from the user
+    // TODO: implement using scanner + Integer.parseInt (handle NumberFormatException)
     public static Integer getIntegerInput(String prompt) {
-        return null;
+        // return null;
+
+        Scanner scanner = new Scanner(System.in); 
+        println(prompt); 
+
+        try {
+            Integer userInput = scanner.nextInt();
+            scanner.nextLine();
+            return userInput;
+
+        } catch (InputMismatchException e) {
+            scanner.nextLine();
+            println("Invalid input. Please enter a valid number");
+            return getIntegerInput(prompt);
+        }
     }
 
+    // Gets a double input from the user
     public static Double getDoubleInput(String prompt) {
-        return null;
+        // return null;
+        Scanner scanner = new Scanner(System.in); //this initalize input from the user. 
+        println(prompt); //this prints the prompt to the console 
+
+        try {
+        Double userInput = scanner.nextDouble(); //this gets the user's input as a double
+        scanner.nextLine(); // consume the newline character
+        return userInput;
+        } catch (InputMismatchException e) {
+            scanner.nextLine();
+            println("Invalid input. Please enter a valid number.");
+            return getDoubleInput(prompt);
+        }
+
     }
+
+    // //Calculations: Can't use this anymore because it's stateless :( back to the drawing board - Jaiden)
+    // public static Double getCalc(Double num1, Double num2) {
+    //     double result = 0;
+    //     int operation = 0;
+
+    //     switch (operation) {
+    //         case 1:
+    //             //addition
+    //             result = num1 + num2;
+    //             break;
+    //         case 2:
+    //             //subtraction
+    //             result = num1 - num2;
+    //             break;
+    //         case 3:
+    //             //multiplication
+    //             result = num1 * num2;
+    //             break;
+    //         case 4:
+    //             //division
+    //             result = num1 / num2;
+    //             break;
+    //         default:
+    //             System.out.println("Invalid operation");
+    //     }
+
+    //     return result;
+    // }
+
+
 }