Make sure the following requirements are met.

• Program must compile and run.
• Make sure to implement the algorithm (Evaluating Postfix Expressions 6.3.1) as a function. (not as part of main) like 2*(3+4) ,234+*
• Note while C does have the atoi function it may be easier to simply subtract the char '0' from the char digit.

Design and implement a class of postfix calculators. Use the algorithm given in this chapter to evaluate postfix expressions as entered into the calculator. Use only the operators +,-,, and /. Assume that the postfix expressions are syntactically correct. 6. Consider simple fix expresstens yhat consis?of single-digit operands; the oprators +, parenthess. Assume that una spaces.ADe rator are legal and tha and iplemept a class einfix calcatators. Use nhe algokthms given and/; and ression contains no embedded apter to