Computers and Technology, 07.03.2020 04:52, Hannahmiller3773

• Add a check box at the bottom of the first page that says: "Compound Interest Monthly". If this box is checked, the interest should be calculated monthly instead of yearly, so you need to change the Future Value calculation to provide for that. • On the second page, display some text that indicates whether the interest is being calculated monthly or yearly.

Answers: 3

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Answers

answered: alannadiaz1

display_result.php

<?php

// get the data from the form

$investment = filter_input(INPUT_POST, 'investment',

FILTER_VALIDATE_FLOAT);

$interest_rate = filter_input(INPUT_POST, 'interest_rate',

FILTER_VALIDATE_FLOAT);

$years = filter_input(INPUT_POST, 'years',

FILTER_VALIDATE_INT);

// validate investment

if ($investment === FALSE )

{

$error_message = 'Investment must be a valid number.';

}

else if ( $investment <= 0 )

{

$error_message = 'Investment must be greater than zero.';

// validate interest rate

}

else if ( $interest_rate === FALSE )

{

$error_message = 'Interest rate must be a valid number.';

}

else if ( $interest_rate <= 0 )

{

$error_message = 'Interest rate must be greater than zero.';

// validate years

}

else if ( $interest_rate >= 15 )

{

$error_message = 'Interest rate must be less than or equal to 15.';

// validate years

}

else if ( $years === FALSE ) {

$error_message = 'Years must be a valid whole number.';

}

else if ( $years <= 0 )

{

$error_message = 'Years must be greater than zero.';

}

else if ( $years > 30 )

{

$error_message = 'Years must be less than 31.';

// set error message to empty string if no invalid entries

}

else

{

$error_message = '';

}

// if an error message exists, go to the index page

if ($error_message != '')

{

include('index1.php');

exit();

}

// calculate the future value

$future_value = $investment;

if (isset($_POST["monthly"]))

{ //compound monthly

$compounded_monthly="Yes";

$months=$years*12;

$monthly_rate = $interest_rate / 12;

for ($i=1;$i<=$months;$i++)

{

$future_value =$future_value + ($future_value * $monthly_rate * .01);

}

// apply currency and percent formatting

}

else

{

for ($i = 1; $i <= $years; $i++)

{

$future_value =$future_value + ($future_value * $interest_rate * .01);

}

$investment_f = '$'.number_format($investment, 2);

$yearly_rate_f = $interest_rate.'%';

$future_value_f = '$'.number_format($future_value, 2);

$monthly_rate_f=number_format($monthly_rate,2).'%';

$now = new DateTime();

<!DOCTYPE html>

<html>

<head>

<title>Future Value Calculator</title>

</head>

<body>

<main>

<h1>Future Value Calculator</h1>

<label>Investment Amount:</label>

<?php

if (isset($_POST["monthly"]))

{

echo "<label>Monthly Interest Rate:</label>";

echo "<span>".$monthly_rate_f."</span><br>";

echo" <label>Number of Months:</label>";

echo "<span>".$months."</span><br>";

echo" <label>Future Value:</label>";

echo"<span>".$future_value_f."</span><br>";

echo"Compound Monthly:".$compounded_monthly."</br>";

}

else

{

echo "<label>Yearly Interest Rate:</label>";

echo "<span>".$yearly_rate_f."</span><br>";

echo" <label>Number of Years:</label>";

echo "<span>".$years."</span><br>";

echo" <label>Future Value:</label>";

echo"<span>".$future_value_f."</span><br>";

}

<label>This calculation was done on:<?php echo date("Y-m-d") ?></label>

</main>

</body>

</html>

main html file

<!DOCTYPE html>

<html>

<head>

<title>Future Value Calculator</title>

</head>

<body>

<main>

<h1>Future Value Calculator</h1>

<label>Investment Amount:</label>

<br>

<label>Yearly Interest Rate:</label>

<br>

<label>Number of Years:</label>

<br>

<input type="checkbox" name="monthly" value="monthly"> Compound Interest Monthly <br>

</div>

</div>

</form>

</main>

</body>

</html>

answered: Guest

answers

a. nitrogen (n)

d. oxygen (o)

hope it

answered: Guest

When u ask a answer a question if two or more people answer it will say mark as brainliest hope this !

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• Add a check box at the bottom of the first page that says: "Compound Interest Monthly". If this bo...