[doc fix and add test]fix documentation in prime and strong number

[realDuYuanChao]

Description of Change

• fix doc
• add test

References

Checklist

• Added description of change
• Added file name matches File name guidelines
• Added tests and example, test must pass
• Relevant documentation/comments is changed or added
• PR title follows semantic commit guidelines
• Search previous suggestions before making a new one, as yours may be a duplicate.
• I acknowledge that all my contributions will be made under the project's license.

Notes:

[kvedala]

Same change for the other file and also to the main function.

[realDuYuanChao]

Same change for the other file and also to the main function.

I did. Please review again :)

[kvedala]

Change not applied to the documentation of main functions. Please add the @return None line to the docstring

[realDuYuanChao]

Change not applied to the documentation of main functions. Please add the @return None line to the docstring

Do you mean like this ?

/**
 *Driver Code
 *@return None
*/
int main()
{
    return 0;
}

[kvedala]

Change not applied to the documentation of main functions. Please add the @return None line to the docstring

Do you mean like this ?

/**
 *Driver Code
 *@return None
*/
int main()
{
    return 0;
}

yes 👍

[realDuYuanChao]

I did this as you say. But I don't know why need add @return None to main function. Because main return 0 to OS. @kvedala

[kvedala]

I did this as you say. But I don't know why need add @return None to main function. Because main return 0 to OS. @kvedala

it is only for the documentation generator. The generator ignored the functions if the doctoring does not contain a @return or @param tags. Please correct that to 0 for main as needed. Thanks, good catch.

[realDuYuanChao]

Can I merge this branch?