Convert a hexadecimal number, represented as a string (e.g. "10af8c"), to its decimal equivalent using first principles (i.e. no, you may not use built-in or external libraries to accomplish the conversion).
On the web we use hexadecimal to represent colors, e.g. green: 008000, teal: 008080, navy: 000080).
The program should handle invalid hexadecimal strings.
To run the tests, run the command dotnet test from within the exercise directory.
Initially, only the first test will be enabled. This is to encourage you to solve the exercise one step at a time.
Once you get the first test passing, remove the Skip property from the next test and work on getting that test passing.
Once none of the tests are skipped and they are all passing, you can submit your solution
using exercism submit Hexadecimal.cs
For more detailed information about the C# track, including how to get help if you're having trouble, please visit the exercism.io C# language page.
All of Computer Science http://www.wolframalpha.com/examples/NumberBases.html