C# How to Get Array?

Hi,
I am new in website development. I recently bought shared hosting at asphostportal.com. Now, I have little problem. Could you help me please? I use C# programming. I want to Create an array that holds 20 elements. User should enter 20 test scores, the program therefore calculates the average of all tests scores. If user enters test score less than 0 or above 100 an error message should display. Additionally it must display the entire array with 20 test scores and calculate the sum, average, number of passed and failed. Thanks.

What have you tried so far? Can we see your code that is not working?

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