Algo-100-Appended-Fibonacci-Sum

A C# Learning Exercise based on HSCTF 3 exercise Algo 100

This program will do the following:

• Ask you to input an integer n
• Return the first n numbers of the Fibonacci sequence
• Append each Fibonacci number to the set of the previous, such as: 1, 11, 112, 1123, ... to a total of n numbers
• Sum each of the appended numbers
• Return the last 9 numbers of this sequence (provided n > 9). For the sake of a more interesting result, consider picking a number greater than 9. (I suggest 50).

Lessons

• Asks user for input of a positive integer
• Exception handling & catches number smaller than zero to re-prompt
• Non-primitive types: classes, arrays, strings
• Uses arithmetic
• Assignment operators, comparison operators, logical operators
• Explicit type conversion / casting
• Generates Fibonacci sequence
• do / while loops
• foreach
• if / else if / else
• BigInteger