/* 
a java program to check your math skills!!
This program was a suggested program from Xiangming (Simon) to attempt to learn the skills of if statements and
also to learn how to apply the conversion of a string to a integer (through the use of the Integer.parseInt method).
I took this suggestion one step further by adding the four different checks of the math skills.  What I like about 
the program is that once you have the basic comparison with the if else (a flow control) figured out, then you 
only need to replicate the statements with minor changes to get further comparisons.  What I would like to figure 
out further is how to make the comparisons all show up in one dialog box.  The complication is in how to make all of the 
comparisons in the if statement (some kind of multiple if statement) with all the right or wrong statements showing up
appropriately.  

*/
public class Comparer
{
    public static void main (String args [])
    {
	//first number to be entered by user
	String firstNumber;
	int number1;
	//second number to be entered by user
	String secondNumber;
	int number2;
	//third number to be entered by user
	String thirdNumber;
	int number3;

	//sum of the addition
	int sum;
	// difference of the subtraction
	int difference;
	// result of the multipication
	int result;
	// product of the division
	int product;


	//read the first number as string
	firstNumber = javax.swing.JOptionPane.showInputDialog ("Enter first integer");
	//read the second number as string
	secondNumber = javax.swing.JOptionPane.showInputDialog ("Enter second integer");
	//read the third number as string
	thirdNumber = javax.swing.JOptionPane.showInputDialog ("Enter second integer");


	//convert the numbers from type String to type int
	number1 = Integer.parseInt (firstNumber);
	number2 = Integer.parseInt (secondNumber);
	number3 = Integer.parseInt (thirdNumber);

	//add the first two numbers
	sum = number1 + number2;
	difference = number1 - number2;
	result = number1 * number2;
	product = number1 / number2;


	if (sum == number3)
	    javax.swing.JOptionPane.showMessageDialog (null, "Your total of " + number3 + " was correct for adding " + number1 + " summed with " + number2 + ".");
	else
	    javax.swing.JOptionPane.showMessageDialog (null, "Adding " + number1 + " and " + number2 + " does not equal the value of " + number3 + ".");
	if (difference == number3)
	    javax.swing.JOptionPane.showMessageDialog (null, "Your total of " + number3 + " was correct for subtracting " + number2 + " from " + number1 + ".");
	else
	    javax.swing.JOptionPane.showMessageDialog (null, "Subtracting " + number2 + " from " + number1 + " does not equal the value of " + number3 + ".");
	if (result == number3)
	    javax.swing.JOptionPane.showMessageDialog (null, "Your total of " + number3 + " was correct for multiplying " + number1 + " and " + number2 + " together.");
	else
	    javax.swing.JOptionPane.showMessageDialog (null, "Multiplying " + number1 + " times " + number2 + " does not equal the value of " + number3 + ".");
	if (product == number3)
	    javax.swing.JOptionPane.showMessageDialog (null, "Your total of " + number3 + " was correct for dividing " + number1 + " with " + number2 + ".");
	else
	    javax.swing.JOptionPane.showMessageDialog (null, "Dividing " + number1 + " by " + number2 + " does not equal the value of " + number3 + ".");


    }
}