When a stack is implemented using a 1-D array, adding a valid item can cause an execution error. Explain why an execution error can occur in this situation.

The key thing to remember here is that an array is a fixed size data structure so any attempt to exceed this size will cause an error during execution e.g. trying to add an item to an already full stack will cause a 'stack full (overflow)' error. Like only being able to add water to a bottle before it eventually overflows.

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Answered by Thomas T. Computing tutor

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