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Why Microsoft Excel Show an Error Message when typing "--do--"? It show an message "Your Formulae is incomplete".

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migrated from Sep 9 '09 at 12:56

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up vote 4 down vote accepted

Start your text with a single quote ' if you want to enter what Excel might think is a formula, because it contains numbers or is a mathematical expression.

The message box does say "If you are not trying to enter a formula, avoid using an equal sign, a minus sign, or precede it with a single quotation mark"

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When you hit the first "-" it thinks you want to do a subtraction operation and tries to put a formula in the cell. If you first format the cell as text and then type that in you'll be fine.

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