ICS3U1 Unit 1 Activity 6: Question 2

// Date Completed: July 13, 2017
// Purpose: Calculating total amount invested at a fixed interest rate over a maximum of 15 years

// This line makes the button, btnCalculate wait for a mouse click
// When the button is clicked, the determineTotal function is called
btnCalculate.addEventListener(MouseEvent.CLICK, determineTotal);

// This line makes the textinputs: txtinInvestment, txtinDuration, and txtinRate, wait for a mouse click
// When a textinput is clicked, the clearLabel 1, 2, or 3 functions are called
txtinInvestment.addEventListener(MouseEvent.CLICK, clearLabel1);
txtinRate.addEventListener(MouseEvent.CLICK, clearLabel2);
txtinDuration.addEventListener(MouseEvent.CLICK, clearLabel3);

// This is the determineTotal function
// e:MouseEvent is the click event experienced by the button
// void indicates that the function does not return a value
function determineTotal(e:MouseEvent):void

{
    //Clear the output labels so that it won't stack the output when the button is pressed again
    lblYears.text = "";
    lblAmount.text = "";
    lblInterest.text = "";
    lblTotal.text = "";

    //Declare the variables for the while statements, preset a counter for 1, preset Total to be 0
    var Investment:Number;
    var Rate:Number;
    var Duration:Number;
    var Total:Number = 0;
    var Counter:Number = 1;
    var Interest:Number;
    var Amount:Number;

    //Set the variables to equal the values from the text input boxes
    Investment = Number(txtinInvestment.text)
    Rate = Number(txtinRate.text)
    Duration = Number(txtinDuration.text)

    //Introduce the while statement for calculating total amount invested at a fixed interest rate
    while (Counter <= Duration && Counter <= 15)
    {
        //Output the Year, and the corresponding account value, interest from account value, and total
        lblYears.text += String(Counter) + "\r";
        //Total initially set to 0 so that the amount could be calculated without a pre-existing total
        Amount = Total + Investment
        lblAmount.text += Amount.toFixed(2) + "\r";
        Interest = (Rate / 100) * Amount
        lblInterest.text += Interest.toFixed(2) + "\r";
        Total = Interest + Amount
        lblTotal.text += Total.toFixed(2) + "\r";
        Counter += 1
    }
}

// This is the clearLabel1 function
// e:MouseEvent is the click event experienced by the textinput
// void indicates that the function does not return a value
function clearLabel1(e:MouseEvent):void

{
    lblYears.text = "";
    lblAmount.text = "";
    lblInterest.text = "";
    lblTotal.text = "";
    txtinInvestment.text = "";
}

// This is the clearLabel2 function
// e:MouseEvent is the click event experienced by the textinput
// void indicates that the function does not return a value
function clearLabel2(e:MouseEvent):void

{
    lblYears.text = "";
    lblAmount.text = "";
    lblInterest.text = "";
    lblTotal.text = "";
    txtinRate.text = "";
}

// This is the clearLabel3 function
// e:MouseEvent is the click event experienced by the textinput
// void indicates that the function does not return a value
function clearLabel3(e:MouseEvent):void

{
    lblYears.text = "";
    lblAmount.text = "";
    lblInterest.text = "";
    lblTotal.text = "";
    txtinDuration.text = "";
}