Access Violation

[Robert Jones]

Why am i getting an access violation:

C:\Documents and Settings\jareth\Desktop>dmd -v -w ly2au.d
parse     ly2au
semantic  ly2au
semantic2 ly2au
semantic3 ly2au
code      ly2au
generating code for function 'main'
c:\dmd\bin\..\..\dm\bin\link.exe ly2au,,,user32+kernel32/noi;

C:\Documents and Settings\jareth\Desktop>ly2au
Enter number of light years: 5
Error: Access Violation

Attached is the source code.
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