Question: Stack Postfix Expression Evaluator C++ Modify Lab 3 by implementing the following function: Postfixevaluation1- that takes the character array in the form of postfix expression

Stack Postfix Expression Evaluator C++

Modify Lab 3 by implementing the following function: Postfixevaluation1- that takes the character array in the form of postfix expression as argument and return the result of the expression. Postfixevaluation2- that takes the string array in the form of postfix expression as argument and return the result of the expression. Peek-return the top element of the stack without deleting that element. Top- return the index of the top element.

Driver: Ask the user to enter the postfix expression. For function Postfixevaluation2, size of stack should be calculated from the postfix expression

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