Please help me with this! The main() function for this project is in Arithmetic.cpp; it queries the end user for a string arithmetic expression. The main() function calls the eval() function to evaluate and return the result of the arithmetic expression passed as a parameter. Lastly, the main() function displays the result to the end user. Any number of expressions may be evaluated. The main() function is completed. You are responsible for the implementation of the eval() function.
Please help me with this! The main() function for this project is in Arithmetic.cpp; it queries the end user for a string arithmetic expression. The main() function calls the eval() function to evaluate and return the result of the arithmetic expression passed as a parameter. Lastly, the main() function displays the result to the end user. Any number of expressions may be evaluated. The main() function is completed. You are responsible for the implementation of the eval() function.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
Related questions
Question
Please help me with this!
The main() function for this project is in Arithmetic.cpp; it queries the end user for a string arithmetic expression. The main() function calls the eval() function to evaluate and return the result of the arithmetic expression passed as a parameter. Lastly, the main() function displays the result to the end user. Any number of expressions may be evaluated. The main() function is completed. You are responsible for the implementation of the eval() function.
Transcribed Image Text:```cpp
#include <cstdlib>
#include <iostream>
#include "ArrayStack.h"
using namespace std;
int main() {
ArrayStack<int> intStack;
cout << "Beginning " << boolalpha << intStack.isEmpty() << endl;
for (int i=1; i<=5; i++) {
intStack.push(i);
}
cout << "After push " << boolalpha << intStack.isEmpty() << endl;
cout << "Contents: ";
while (!intStack.isEmpty()) {
cout << intStack.peek() << " ";
intStack.pop();
}
//cout << endl << "Sum: " << sum << endl;
cout << endl;
//check copy constructor
ArrayStack<int> numStack(intStack);
cout << "Copied item: " << numStack.peek() << endl;
intStack.pop();
cout << "Original stack item: " << intStack.peek() << endl;
cout << "Copied stack item: " << numStack.peek() << endl;
ArrayStack<string> strStack;
strStack.pop();
//cout << "Did a problem occur with pop? " << endl;
//intStack.peek();
//cout << "Did a problem occur with peek? " << endl;
return 0;
}
```
**Code Explanation:**
This C++ code demonstrates the use of a stack implemented as an `ArrayStack`.
1. **Header Files:**
- `<cstdlib>` and `<iostream>` are included for standard input/output operations.
- `"ArrayStack.h"` is included, indicating a custom stack implementation file.
2. **Namespace and Main Function:**
- The `std` namespace is used to avoid prefixing standard library functions.
- The `main` function is the program's entry point.
3. **Integer Stack Operations:**
- An `ArrayStack` of integers (`intStack`) is created.
- The program checks if the stack is empty using `isEmpty()`.
- A loop pushes integers 1 to 5 onto the stack.
- It then checks again if the stack is empty and prints the contents by popping each element.
4. **Copy Constructor:**
- Another stack, `numStack`, is initiated as a copy of `intStack`.
- The program demonstrates accessing the top element using `peek()` for both the original and copied
Transcribed Image Text:**Example run:**
Enter an arithmetic expression on a single line ('q' to end): 5+8
5+8 = 13
Enter an arithmetic expression on a single line ('q' to end): 2+1-6
2+1-6 = -3
Enter an arithmetic expression on a single line ('q' to end): 5-4/2
5-4/2 = 3
Enter an arithmetic expression on a single line ('q' to end): 1+9*2-4
1+9*2-4 = 15
Enter an arithmetic expression on a single line ('q' to end): 2-1+5*2/2
2-1+5*2/2 = 6
Enter an arithmetic expression on a single line ('q' to end): q
This text demonstrates a program that evaluates arithmetic expressions entered by the user. The program continues to prompt the user until 'q' is entered to quit. Each expression is calculated according to the order of operations, and the result is displayed immediately after the expression.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Recommended textbooks for you
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education