Computer Science: A Structured Programming Approach Using C, Third Edition
3rd Edition
ISBN: 9780534491321
Author: Behrouz A. Forouzan, Richard F. Gilberg
Publisher: Course Technology, Inc.
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Chapter 1, Problem 15PS
Describe the two major components of a computer system.
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Given the following Extended-BNF grammar of the basic mathematical expressions:
Show the derivation steps for the expression: ( 2 + 3 ) * 6 – 20 / ( 3 + 1 )
Draw the parsing tree of this expression.
SEE IMAGE
Whentheuserenters!!,themostrecentcommandinthehistoryisexecuted.In the example above, if the user entered the command:
Osh> !!
The ‘ls -l’ command should be executed and echoed on user’s screen. The command should also be placed in the history buffer as the next command.
Whentheuserentersasingle!followedbyanintegerN,theNthcommandin the history is executed. In the example above, if the user entered the command:
Osh> ! 3
The ‘ps’ command should be executed and echoed on the user’s screen. The command should also be placed in the history buffer as the next command.
Error handling:
The program should also manage basic error handling. For example, if there are no commands in the history, entering !! should result in a message “No commands in history.” Also, if there is no command corresponding to the number entered with the single !, the program should output "No such command in history."
Activity No.
Activity
Time (weeks)
Immediate Predecessors
1
Requirements collection
3
2
Requirements structuring
4
1
3
Process analysis
3
2
4
Data analysis
3
2
5
Logical design
50
3,4
6
Physical design
5
5
7
Implementation
6
6
c. Using the information from part b, prepare a network diagram. Identify the critical path.
Chapter 1 Solutions
Computer Science: A Structured Programming Approach Using C, Third Edition
Ch. 1 - Computer software is divided into two broad...Ch. 1 - Prob. 2PSCh. 1 - Prob. 3PSCh. 1 - The programmer design tool used to design the...Ch. 1 - Blackbox testing gets its name from the concept...Ch. 1 - Prob. 6PSCh. 1 - Prob. 7PSCh. 1 - Which of the following is not a computer language?...Ch. 1 - The computer language that most closely resembles...Ch. 1 - Prob. 10PS
Ch. 1 - Prob. 11PSCh. 1 - Prob. 12PSCh. 1 - The is a program design tool that is a visual...Ch. 1 - Prob. 14PSCh. 1 - Describe the two major components of a computer...Ch. 1 - Computer hardware is made up of five parts. List...Ch. 1 - Prob. 17PSCh. 1 - Describe the two major categories of software.Ch. 1 - Prob. 19PSCh. 1 - Prob. 20PSCh. 1 - Prob. 21PSCh. 1 - Prob. 22PSCh. 1 - Prob. 23PSCh. 1 - Prob. 24PSCh. 1 - Prob. 25PSCh. 1 - Prob. 26PSCh. 1 - Prob. 27PSCh. 1 - Describe the three tools that a programmer may use...Ch. 1 - Prob. 29PSCh. 1 - Prob. 30PSCh. 1 - Prob. 31PSCh. 1 - Write pseudocode for calcLivingAreas, Figure 1-12,...Ch. 1 - Prob. 33PSCh. 1 - Prob. 34PS
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