(Postfix notation) Postfix notation is a way of writing expressions without using parentheses. For example, the expression (1 + 2) 3 would be writ- ten as 1 2 + 3 *. A postfix expression is evaluated using a stack. Scan a postfix expression from left to right. A variable or constant is pushed to the stack. When an operator is encountered, apply the operator with the top two operands in the stack and replace the two operands with the result. The follow- ing diagram shows how to evaluate 1 2 + 3 *. 1. 3 3 9. 12 + 3 * 12 + 3* 12+3* 12 + 3* 12 +3* scanned scanned scanned scanned scanned Write a program that prompts the user to enter a postfix expression and evalu- ates it.
(Postfix notation) Postfix notation is a way of writing expressions without using parentheses. For example, the expression (1 + 2) 3 would be writ- ten as 1 2 + 3 *. A postfix expression is evaluated using a stack. Scan a postfix expression from left to right. A variable or constant is pushed to the stack. When an operator is encountered, apply the operator with the top two operands in the stack and replace the two operands with the result. The follow- ing diagram shows how to evaluate 1 2 + 3 *. 1. 3 3 9. 12 + 3 * 12 + 3* 12+3* 12 + 3* 12 +3* scanned scanned scanned scanned scanned Write a program that prompts the user to enter a postfix expression and evalu- ates it.
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
Transcribed Image Text:(Postfix notation) Postfix notation is a way of writing expressions without
using parentheses. For example, the expression (1 + 2) 3 would be writ-
ten as 1 2 + 3 *. A postfix expression is evaluated using a stack. Scan a
postfix expression from left to right. A variable or constant is pushed to the
stack. When an operator is encountered, apply the operator with the top two
operands in the stack and replace the two operands with the result. The follow-
ing diagram shows how to evaluate 1 2 + 3 *.
1.
3
3
9.
12 + 3 *
12 + 3*
12+3*
12 + 3*
12 +3*
scanned
scanned
scanned
scanned
scanned
Write a program that prompts the user to enter a postfix expression and evalu-
ates it.
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