Code for CalcMain Program

gistfile1.txt

package calcmain;

/**
 *
 * @author deshay.cunningham
 */

import java.util.Scanner;

public class CalcMain {

    /**
     * @param args the command line arguments
     */
   static double getAddition(double x, double y) {
       return x+y;
   }
   static double getSubtraction(double x, double y) {
       return x-y;
   }
   static double getMultiplication(double x, double y) {
       return x*y;
   }
   static double getDivision(double x, double y) {
       return x/y;
   } 
        
    
   public static void main(String[] args)  {
        int op, n, a;
    double x=0, y=0, z=0;    
              
    System.out.println ("Welcome to CSC 159 Calculator.");
    System.out.println("******************************");
    System.out.println("Choose from any operation below");
    System.out.println("1 for ADDITION");
    System.out.println("2 for SUBTRACTION");
    System.out.println("3 for MULTIPLICATION");
    System.out.println("4 for DIVISION");
    System.out.println("5 for Temperature Converter from F to C");
    System.out.println("6 for Temperature Converter from C to F");
    System.out.println("7 for Convert miles to kilometers");
    System.out.println("8 for Convert kilometers to Miles");
    System.out.print("Please enter your choice based on the above menu:");
              
    Scanner Keyin = new Scanner(System.in); //define Keyin object of type Scanner for all integer readings
 
        op=Keyin.nextInt();
     while(op > 8)
    {
        System.out.print("Please enter your choice based on the above menu:");
                op=Keyin.nextInt();
    }

    if(op < 5)
    {
        System.out.print("Input first operand: ");
        x = Keyin.nextInt();
        System.out.print("Input second operand: ");
        y = Keyin.nextInt();
    }

    if(op == 1)
    {
            z=getAddition(x, y);
        System.out.println("The result of adding " + x + " and "+ y +" is " + z);
    }    

    if(op == 2)
    {
            z=getSubtraction(x,y);
        System.out.println("The result of subtracting " + x + " and "+ y +" is " + z);

    }

    if(op == 3)
    {
        z=getMultiplication(x, y);
        System.out.println("The result of multiplying " + x + " and "+ y +" is " + z);
    }

    if(op == 4)
    {
        if(y != 0)
        {
                    z=getDivision(x,y);
                    System.out.println("The result of dividing " + x + " and "+ y +" is " + z);
        }
        else
        {
                    System.out.println("The result is infinity.");
        }
    }

    
    if(op == 5)
    {
        System.out.print("Please enter the temperature in degrees Fahrenheit: ");
        //x=System.in.read();
        //z = FtoC(x);
        System.out.println("The calculated temperature in degree Celsius is " + z);
    }

    if(op == 6)
    {
        System.out.print("Please enter the temperature in degrees Celcius: ");
       // x=Keyin.nextInt();
        //z = CtoF(x);
        System.out.println("The calculated temperature in degree Fahrenheit is " + z);
    }

    if(op == 7)
    {
        System.out.print("Please enter the miles to convert to kilometers: ");
        //x=Keyin.nextInt();        
                //z = MtoK(x);
        System.out.println("The miles to kilometer conversion is " + z);
    }
    
    if(op == 8)
    {
        System.out.print("Please enter the Kilometers to convert to Miles: ");
        //x=Keyin.nextInt();
        //z = KtoM(x);
        System.out.println("The Kilometers to Miles conversion is " + z);
    }​