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Show Bid Request
a program that evaluate a postfix expression(assume it's valid)such as 62+5*84/-
Bid Request Id: 14329
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Posted by: |
freaky (3 ratings)
(Software buyer rating 10)
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Non-action Ratio: |
Very Good - 18.18%
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Buyer Security Verifications: |
Unverified
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Approved on: |
Apr 22, 2002 9:39:47 PM EDT
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Bidding Closes: |
Apr 24, 2002 9:41:16 PM EDT
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Viewed (by coders): |
322 times
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Deadline: |
4/25/2002
TIME EXPIRED
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Description:
The program should read a postfix expression consisting of digits and operators into a character array.It should scan and evaluate the expression.The algorithm is as follow:
1.append the Null character('\0')to the end of the prefix expression.When the Null character is encountered,no further processing is needed.
2.While '\0'hasn't been encountered,read the expression from left to right. if the current character is a digit,push its integer value onto the stack.Otherwise, if the current charater is operator,pop the two top elements of the stack into variables x and y.push the result of the calculation onto the stack.
3.When the Null character is encountered in the expression,pop the top value of the stack.This is the result of the postfix expression.
Functions: a. evaluatePostfixExpression b. calculate c. push: pushes value onto stack. d. pop: pops a value off stack. e. isEmpty: determine if stack is empty. f. printStack
Deliverables: Need it before Apr 23 9am Complete and fully-functional working program(s) in executable form as well as complete source code of all work done.
Complete copyrights to all work purchased.
Platform:
Ms V c++
Must be 100% finished and received by buyer on:
Apr 25, 2002 EDT
Deadline legal notes: All times are expressed in the time zone of the site EDT (UT - 5). If the buyer omitted a time, then the deadline is 11:59:59 PM EDT on the indicated date.
Additional Files:
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Bidding/Comments:
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No bidding allowed, because this bid request was cancelled.
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Cancelled Date: |
9/8/2002 2:12:33 PM
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