HaskellProjects

Fibonacci & Lucas Numbers

Computes Fibonacci and Lucas numbers for a given integer input, supporting decimal, scientific, and hexadecimal formats. Includes optional timing of computation.

🛠 Build & Run

Make sure you have GHC (Glasgow Haskell Compiler) installed.

cd fib
ghc fib.hs -o fib
./fib      # Linux/macOS
.\fib.exe  # Windows

⚙ Command-line Arguments

The program supports optional arguments to control output:

• --fib — print only the Fibonacci number
• --lucas — print only the Lucas number
• --print — print both Fibonacci and Lucas numbers

Example run:

./fib --print      # Linux/macOS
.\fib.exe --print   # Windows

The program will then prompt for a number.

📋 Expected Output

After entering a number, the program prints the requested sequence(s) along with computation time.

Example:

This program computes the Fibonacci and Lucas numbers of a given integer.
Enter a number: 10
F(10) = 55
L(10) = 123
Elapsed time: 0.000001 sec

🔔 Notes

• Supports decimal, scientific (e.g., 1e3), and hexadecimal (e.g., 0xFF) inputs.
• Computation uses a combined Fibonacci-Lucas algorithm for efficiency.
• Timing is provided using CPU time for reference.

📜 License

This project is licensed under the MIT License.

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