Bifalgorithm post · Computer science one · Computing Quadratic Roots

What kinds of user input can cause problems in a quadratic-roots program?

What kinds of user input can cause problems in a quadratic-roots program? (Computer science one · Computing Quadratic Roots) — "Finally, think about the possib…

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Robustly handling problematic user input
Potential bad inputs must be identified
The user enters zero for a
The user enters values such that b² < 4ac
The user enters non-numeric values
How many command-line arguments were provided?
Fewer than three command-line arguments were provided
More than three command-line arguments were provided
Prevent the consequences of bad input
Handle the event that bad input is entered
Communicate input errors to the user
Use conditionals to resolve these issues

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What kinds of user input can cause problems in a quadratic-roots program?

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Computer science one

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sam23

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"Finally, think about the possible input a user could provide that may cause problems for this program. For example:\n\n• What if the user entered zero for a?\n\n• What if the user entered some combination such that b^2 < 4ac?\n\n• What if the user entered non-numeric values?\n\n• For the command line argument version, what if the user provided less than three arguments? Or more?\n\nHow might we prevent the consequences of such bad input? How might we handle the event that a user enters bad input and how do we communicate these errors to the user? To begin to resolve these issues, we’ll need conditionals."

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