/*******************************************************************************
 * Author:  Benjamin San Nicolas
 * Course:  CSC240C41
 * Date:    October 17, 2018
 *
 * Purpose: The purpose of this program is to request two digits and a operator
 *          (+,-,*,/) then output the answer after the last item is entered.
 ******************************************************************************/
//Header
import java.util.Scanner;

//Define class
public class javaCalc
{
  //Main Method
  public static void main(String[] args)
  {
      //Variables
      int num1, num2;
      float ans;
      char operation;

      //Scanner
      Scanner input = new Scanner(System.in);

      //Request operation
      do
      {
          System.out.print("1) Addition\n");
          System.out.print("2) Subtraction\n");
          System.out.print("3) Mutiplication\n");
          System.out.print("4) Division\n");
          System.out.print("5) Exit Program\n");
          System.out.print("Please choose an operation: ");
          operation = input.next().charAt(0);

          //Switch
          switch(operation)
          {
              //Addition
              case '1':
                  System.out.print("Please enter the first number: ");
                  num1 = input.nextInt();
                  System.out.print("Please enter the second number: ");
                  num2 = input.nextInt();

                  //Calculate and output
                  ans = num1 + num2;
                  System.out.printf(num1 + " + " + num2 + " = " + "%.2f", ans);
                  System.out.print("\n");
                  System.out.print("\n");
                  break;

               //Subtraction
               case '2':
                  System.out.print("Please enter the first number: ");
                  num1 = input.nextInt();
                  System.out.print("Please enter the second number: ");
                  num2 = input.nextInt();

                  //Calculate and output
                  ans = num1 - num2;
                  System.out.printf(num1 + " - " + num2 + " = " + "&.2f", ans);
                  System.out.print("\n");
                  System.out.print("\n");
                  break;

               //Multiplication
               case '3':
                  System.out.print("Please enter the first number: ");
                  num1 = input.nextInt();
                  System.out.print("Please enter the second number: ");
                  num2 = input.nextInt();

                  //Calculate and output
                  ans = num1 * num2;
                  System.out.printf(num1 + " * " + num2 + " = " + "%.2f", ans);
                  System.out.print("\n");
                  System.out.print("\n");
                  break;

               //Division
               case '4':
                  System.out.print("Please enter the first number: ");
                  num1 = input.nextInt();
                  System.out.print("Please enter the second number: ");
                  num2 = input.nextInt();

                  //Calculate and output
                  ans = num1 / num2;
                  System.out.printf(num1 + " / " + num2 + " = " + "&.2f", ans);
                  System.out.print("\n");
                  System.out.print("\n");
                  break;

               //Exit
               case '5':
                   System.exit(0);

               //Default
               default:
                   System.out.print("Please check your selection.");
          }
      }
      while(operation != 5);

  }//End Main
}//End Class