(Practice) State whether the following variable names are valid. If they are invalid, state the reason. Also, indicate which of the valid variable names shouldn’t be used because they convey no information about the variable.
current | a243 | r2d2 | firstnum | cc_a1 |
harry | sue | c3p0 | total | sum |
maximum | okay | a | awesome | goforit |
3sum | for | tot.a1 | c$five | netpower |
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