**************Please do the following in C++ *********

Recursive Descent Parsing Consider the following BNF grammar: A -> I = E E -> POPP 0 -> + | - | * |/ | ** P -> I | L UI | UL | (E) U -> + | I! I ->CCI C-> a / b | | y | z [ -> D | DL D -> | 1 | | 8 | 9 Using the technique described in class implement a recursive descent parser that recognizes strings in this language. Input should be from a file called input.txt and output should be to the screen. An example session might look like this (these strings are not necessarily in the language): Input file: a=1 a=a+b-cd a=a//b++C Output: The string "a=1" is in the language. The string "a=a+b-c*d" is in the language. The string "asa//b++c" is not in the language. You must implement the project in BOTH Java and C++! Implementations that do not include a solution in both languages will, at best, receive half credit. To simplify things you will not have to handle whitespace when parsing the string, i.e."" and similiar are illegal characters in this language. All strings should read from a file called "input.txt" and written to the screen