Initial data commit

Task/Fibonacci-sequence/Batch-File/fibonacci-sequence.bat

@@ -0,0 +1,21 @@
+::fibo.cmd
+@echo off
+if "%1" equ "" goto :eof
+call :fib %1
+echo %errorlevel%
+goto :eof
+
+:fib
+setlocal enabledelayedexpansion
+if %1 geq 2 goto :ge2
+exit /b %1
+
+:ge2
+set /a r1 = %1 - 1
+set /a r2 = %1 - 2
+call :fib !r1!
+set r1=%errorlevel%
+call :fib !r2!
+set r2=%errorlevel%
+set /a r0 = r1 + r2
+exit /b !r0!