Question: Design the data structure of representing a context-free grammar. Using c++ Implement in one program the three algorithms to removing ?-productions, unit-productions, and useless productions.

Design the data structure of representing a context-free grammar.

Using c++

Implement in one program the three algorithms to removing ?-productions, unit-productions, and useless productions.

Develop test cases and test your implementation.

show the test data (test cases) and test result.

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