A double is best used for numbers that are real, as in they have a decimal. Int is best used for numbers that are whole, as in no decimal. Strings are best used, as in the example you gave, when you have to represent a piece of information that isn’t strictly numbers
A virus can do many things from burn up your hard drive to just annoy you with ads. the best thing you can do if you think you have one is take it to a professional
In a file extension, it tells what type of file it is and tells what compiler to run the code.
Explanation:
i don't think rhis question could be..
