Algorithm 1. Scan P from left to right and repeat Steps 3 and 4 for each element of P. 2. If an operand is encountered, put it on STACK. 3. If an operator O is encountered, then: (a) Remove the two top elements of STACK, where A is the top element and B is the next- to-top element. (b) Evaluate B A. (c) Place the result on to the STACK. 4. Result equal to the top element on STACK. 5. Exit. H.W. Write a C++ program to implement the algorithm above (Evaluating postfix expression)

Algorithm 1. Scan P from left to right and repeat Steps 3 and 4 for each element of P. 2. If an operand is encountered, put it on STACK. 3. If an operator O is encountered, then: (a) Remove the two top elements of STACK, where A is the top element and B is the next- to-top element. (b) Evaluate B A. (c) Place the result on to the STACK. 4. Result equal to the top element on STACK. 5. Exit. H.W. Write a C++ program to implement the algorithm above (Evaluating postfix expression)

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter18: Stacks And Queues

Section: Chapter Questions

Problem 10PE

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