Programing assignment 5 part 1. write the first version of the calculator program based on the type token introduced above in the lab portion. (a) write the exception class bad_token (b) write the function get_token() which returns tokens corresponding to input expression. it is not a member of the struct token. if it cannot recognize a token then the exception bad_token should be thrown. (c) numbers can be now any nonnegative integers, not only one-digit numbers. (d) write the functions based on the grammar for the arithmetic expression: expression, term, primary to evaluate the input expression. (e) explain in the readme file why this version of the calculator program is not correct. justify what is wrong and why. how should it be fixed? (f) the output (if it exists) should consist of an input expression, the equal sign, and its result in one line of each arithmetic expression. examples: 2+3 = 5 (1+2) *12 = 36 (2*3+1)/3 = 2

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we can all learn from our past mistakes because we all have different ways of learning different types of techniques. my way may or may not another classmate remember and have the repetition to acknowledge such standard. such as remembering acronyms. using abbreviations to us remember keep things in order in our memory. this us figure out what comes next in the sequence. if so, what we have is a sentence of just letters all in caps. we either know the meaning or have no idea what it stands for. most of the time we know the meaning and context. but most of us who don't know, should learn by having a quick glance at what needs to be remembered. such as repetition in the memory for acronyms. one way that me, is the fact that i'm always doing math and english assignments. so we have to remember specific meanings such as soapstone for documents, such as citing correctly. or pemdas for doing the equations correctly, even if it's the super long way. this works for everyone. you just have to find what works for you by practicing and repetition daily.