Your question is too vague to give a direct answer to. All Office applications come with a fully-fledged programming language - Visual Basic for Applications (VBA). Even without that, Excel (and to a lesser extent, Word) can use formulae to do a wide range of calculations based on what users might input into one or more cells. Whether you'd consider that 'programming' depends on what you mean...

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]