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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Textbook Question
Chapter 4, Problem 16PS
Find any errors in the following function definition:
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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.
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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 4 Solutions
Computer Science: A Structured Programming Approach Using C, Third Edition
Ch. 4 - Prob. 1PSCh. 4 - The function definition contains the code for a...Ch. 4 - Function calls that return void may not be used as...Ch. 4 - The address operator (&) is used to tell the...Ch. 4 - Variables defined within a block have global...Ch. 4 - Prob. 6PSCh. 4 - Which of the following statements about function...Ch. 4 - Which of the following is not a part of a function...Ch. 4 - Which of the following statements about function...Ch. 4 - Which of the following statements about local...
Ch. 4 - Prob. 11PSCh. 4 - Prob. 12PSCh. 4 - Which of the following statements will generate a...Ch. 4 - Which of the following statements about structure...Ch. 4 - Find any errors in the following function...Ch. 4 - Find any errors in the following function...Ch. 4 - Find any errors in the following function...Ch. 4 - Find any errors in the following function...Ch. 4 - Find any errors in the following function...Ch. 4 - Find any errors in the following function calls:...Ch. 4 - Evaluate the value of the following expressions:...Ch. 4 - Evaluate the value of the following...Ch. 4 - Prob. 23PSCh. 4 - Define the range of the random numbers generated...Ch. 4 - What would be printed from Program 4-17 when run...Ch. 4 - Prob. 26PSCh. 4 - Prob. 27PSCh. 4 - Prob. 28PSCh. 4 - Prob. 29PSCh. 4 - Write a program that generates a random number...Ch. 4 - Prob. 31PSCh. 4 - Code and run Program 4-16, "Top—down Development...Ch. 4 - Prob. 33PSCh. 4 - Prob. 34PSCh. 4 - Expand the calculator program, Program 4-15, to...Ch. 4 - Prob. 36PSCh. 4 - Write a function that receives a positive...Ch. 4 - Prob. 38PSCh. 4 - Prob. 39PSCh. 4 - Prepare a payroll earnings statement for the sales...Ch. 4 - Write a program that, given a beginning balance in...Ch. 4 - The formula for converting centigrade temperatures...Ch. 4 - Write a program that uses standard functions. The...Ch. 4 - Write a C program that creates customers' bills...
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