Answered: Declare 3 variables for 3 different…

New Perspectives on HTML5, CSS3, and JavaScript

6th Edition

ISBN:9781305503922

Author:Patrick M. Carey

Publisher:Patrick M. Carey

Chapter7: Designing A Web Form: Creating A Survey Form

Section: Chapter Questions

Problem 5CP2

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Question

Declare 3 variables for 3 different courses, and assign values to them. Using HTML form getting handled by PHP.

So use 3 text boxes for 3 different courses grades

Calculate the GPA and display it on the screen

Expert Solution

Step 1

Algorithm steps of HTML:

Start
Create an HTML document with the title "GPA Calculator".
Create a form element with a method of "post" and an action of "calculate-gpa.php".
Within the form element, create a heading 2 element with the text "GPA Calculator".
Create a label element with the text "Course 1:", and an input element of type "text" with the name "course1" and an id of "course1".
Create a label element with the text "Course 2:", and an input element of type "text" with the name "course2" and an id of "course2".
Create a label element with the text "Course 3:", and an input element of type "text" with the name "course3" and an id of "course3".
Create a line break element.
Create an input element of type "submit" with the name "submit" and the value "Calculate GPA".
End the form element.
End the HTML document.

Algorithm steps of Php:

Start
Check if the submit button was clicked or not by using the isset() function in PHP.
If the submit button was clicked, retrieve the marks obtained in each course using the $_POST superglobal variable and store them in their respective variables: $course1, $course2, and $course3.
Calculate the total marks obtained by adding the marks in all three courses together, and store it in a variable called $total_marks.
Calculate the GPA by dividing the total marks by 3, and store it in a variable called $gpa.
Display the calculated GPA using the echo statement with a string message and the calculated GPA. The number_format() function is used to format the GPA with two decimal points.
End the PHP script.

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