Please complete the following description of arithmetic expressions LL (1) recursive grammar decline analysis procedure of G [E]: E → the TE ' E' → the ATE ' | ε T-→ the FT' T ' → the MFT' | ε F → (E) | d | i A →+ |- M →* |/Description: The end of the symbol d is a positive integer, the end of the symbol i for the variable. Its function: a string of four arithmetic expression input from the keyboard control grammar G [E] check the syntax of the input string is correct, if incorrect, must be pointed out that the cause of the error.

四则运算的语法分析程序.cpp

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