In c++ Q1: Create a function int evaluatePostfix(const string& expr) that uses StackDLL to evaluate themathematical expression is postfix(the operator after the 2 operands) Examples:evaluatePostfix("35+") returns 8evaluatePostfix("32*31*/") returns 2evaluatePostfix("51-21++") returns 7test your function in the main driver

Evaluating Postfix Expressions Using a StackUnderstanding Postfix ExpressionsIn postfix notation,…

Answered: Q1: Create a function int…

C++ for Engineers and Scientists

4th Edition

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Bronson, Gary J.

Chapter10: Pointers

Section: Chapter Questions

Problem 2PP

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> amount; 4 cout > amount; 11 cout << endl; 12 int numBills2 = (int) (amount / 20.0); 13 if (numBills2 * 20.0 < amount) { 14 numBills2++; 15} 16 cout << "John needs " << numBills1 << "bills" << endl; 17 cout << "Jane needs " << numBills2 << " bills" << endl; Function: Write a C++ function as described, not a complete program. ✔ Submit
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MULTIPLE FUNCTIONS AND RECURSIVE FUNCTIONS Use #include<stdio.h> Write a function main() and implement each math operations defined above. Design a basic calculator that will asks from the user to enter 2 integers and the math operator symbol as shown below: (the highlited part)

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