Infix and postfix notations are two different ways of writing arithmetic expressions. Please see the URL below for more details on the two notations. http://www.cs.man.ac.uk/~pjj/cs2121/fix.html Write a program to evaluate infix expressions using the stack created in problem 1. Your pro- gram should read the expression as input string and evaluate it in a single pass. (Hint: You have to use the infix to postfix conversion algorithm and postfix evaluation algorithm us- ing two stacks - one stack for the operands and one stack for the operators. The infix to postfix con- version algorithm is explained in the following URL: http://csis.pace.edu/~wolf/CS122/infix-postfix.htm The postfix evaluation algorithm is explained in the following URL: https://scriptasylum.com/tutorials/infix_postfix/algorithms/postfix-evaluation/ The infix expression can contain: 1. Integers 2. +' and ** operators 3. (' and ')' parentheses As usual, * operator has higher precedence than + operator. Both * and + are left associative.

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Concept of flowchart

A flow chart diagram is a collection of symbols that represents the steps involved in a process. It is a generic tool that can be adapted for various purposes. It is one of the most common process analysis tools. It is used for the graphical analysis of an algorithm. It helps to represent the flow of the process from the input to output. A flowchart that represents the workflow of activities is known as an activity diagram.There are so many ways that can help people to understand computer technologies and their applications. One of them is a flowchart diagram.