
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Question
Write a program that uses stacks to evaluate an arithmetic expression in infix notation without converting it into postfix notation.
The program takes as input a numeric expression in infix notation, such as 3+4*2, and outputs the result.
1) Operators are +, -, *, /
2) Assume that the expression is formed correctly so that each operation has two arguments.
3) The expression can have parenthesis, for example: 3*(4-2)+6.
4) The expression can have negative numbers.
5) The expression can have spaces in it, for example: 3 * (4-2) +6 .

Transcribed Image Text:Write a program that uses stacks to evaluate an arithmetic expression in infix notation without converting it
into postfix notation.
The program takes as input a numeric expression in infix notation, such as 3+4*2, and outputs the result.
1) Operators are +, -, *, /
2) Assume that the expression is formed correctly so that each operation has two arguments.
3) The expression can have parenthesis, for example: 3*(4-2)+6.
4) The expression can have negative numbers.
5) The expression can have spaces in it, for example: 3* (4-2) +6.
Here are some useful functions that you may need:
char cin.peek(); -- returns the next character of the cin input stream (without reading it)
bool isdigit(char c); -- returns true if c is one of the digits '0' through '9', false otherwise
cin.ignore(); -- reads and discards the next character from the cin input stream
cin.get(char &c); -- reads a character in c ( could be a space or the new line)
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