ZCW-MacroLabs-OOP-ScientificCalculator/Operations.java

/**
 * Write a description of class Operations here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
import java.util.Scanner;
public class Operations
{
    // instance variables - replace the example below with your own
    private int x;
    scienticFunctions scientificOperator = new scienticFunctions();

    /**
     * Constructor for objects of class Operations
     */
    public Operations()
    {
        // initialise instance variables
        //x = 0;
    }

    /**
     * An example of a method - replace this comment with your own
     *
     * @param  y  a sample parameter for a method
     * @return    the sum of x and y
     */
    public static void runCommand()
    {
        // put your code here

        Scanner input = new Scanner(System.in);
        Double result = 0.0;
        double firstNumber = 0.0;
        double SecondNumber =0.0;
        //String userInput = scanner.nextLine();
        scienticFunctions ScientificFunctions = new scienticFunctions();
        // Calculator calc = new ....
        while (true) {
            System.out.print("Enter a command: ");
            String command = input.next();
            if (command.equalsIgnoreCase("exit"))  {
                System.out.print("Thanks for calculating with us!");
                break;
            }
            if (command.equalsIgnoreCase("sine"))  {
                // read first number
                System.out.print("Enter a number: ");
                firstNumber = input.nextDouble();
                // read second number
                //double secondNumber = input.nextDouble();
                // call the add method on calc and display
                result  = ScientificFunctions.sine(firstNumber);
                //firstNumber = result;
                //result = firstNumber;
                Console.printResult(result);
            }
            if (command.equalsIgnoreCase("cos"))  {
                // read first number
                firstNumber = input.nextDouble();
                // call the cosine method on calc and display
                result  = ScientificFunctions.cos(firstNumber);
                Console.printResult(result);
            }
            if (command.equalsIgnoreCase("tan"))  {
            // call the square method on calc and display
                firstNumber = input.nextDouble();
                result = ScientificFunctions.tangent(firstNumber);
                Console.printResult(result);
            }
            if (command.equalsIgnoreCase("cos-1"))  {
            // call the square method on calc and display
                firstNumber = input.nextDouble();
                result = ScientificFunctions.inverseCosine(firstNumber);
                Console.printResult(result);
            }
            if (command.equalsIgnoreCase("sin-1"))  {
            // call the square method on calc and display
                firstNumber = input.nextDouble();
                result = ScientificFunctions.inverseSine(firstNumber);
                Console.printResult(result);
            }
            if (command.equalsIgnoreCase("tan-1"))  {
            // call the square method on calc and display
                firstNumber = input.nextDouble();
                result = ScientificFunctions.inverseTangent(firstNumber);
                Console.printResult(result);
            }
            firstNumber = result;
            // and on and on
        }

    }

    //Add CommentCollapse 

}