Neg num of ques

[nishita2104]

Fixes #112

Describe the changes you've made

I have added an if condition in the getValues() function in main.js file. This if condition checks if the amount of questions is not between 1 and 56, then it displays the said error.
To display the error in the app itself (to avoid using alerts), 2 more functions are made namely showError and clearError. These functions help display the error and clear it when error is fixed, i.e. correct number of questions is entered.

Type of change

What sort of change have you made:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

I entered several possible error cases in the number of questions column and each time the error message was displayed. The test starts if the number of questions entered is between 1 and 56.

Checklist:

• My code follows the guidelines of this project.
• I have performed a self-review of my own code.
• I have commented my code, particularly wherever it was hard to understand.

Screenshots (Images)

Before the changes	After the Changes

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[github-actions]

Congratulations on your First Pull Request! Wish you best on your open-source journey 😊

[nishita2104]

Kindly review this PR. Thank you

[nishita2104]

Kindly review this PR. Thank you

[nishita2104]

Kindly review this PR. Thank you

[prakhartiwari0]

Great job @nishita2104!
One more improvement we can do, please make it more visible by putting a very light background, and making the text red. You can share suggestions too for this :)

[nishita2104]

sure!

[nishita2104]

@prakhartiwari0 This is what it looks like after modification:

I have already committed this change, if any further modification is required please let me know.