Question
Modify the calculator program to indicate the approximate position of an error rather than just sounding a beep, by using the fact that the parser returns the unconsumed part of the input string.Solutions to exercises 1-4 are given in appendix A.
Step 1
First, we need to modify the calculator program to return the unconsumed part of the input string when an error occurs. Currently, the program just beeps when an error is encountered. We can modify the program to return the unconsumed part of the input string as a Show more…
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