Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 8, Problem 8.12HW
How many "hello'’ output lines does this
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Using SPIM, write and test a program that reads in a positive integer using the SPIM system calls. If the integer is not positive, the program should terminate with the message “Invalid Entry”; otherwise the program should print out the names of the digits of the integers, delimited by exactly one space. For example, if the user entered “728,” the output would be “Seven Two Eight.”
1. Write a program that does the following:
- reads an unspecified number of integers
- determines how many positive and negative values have been read
- computes the total and average of the input values (not counting zeros).
Your program ends with the input o.
Display the average as a floating-point number.
If the entire input is 0, the program displays "No numbers are entered except 0".
Here is a sample run:
Enter integers ending with 0: 1 2 -1 3 0
The number of positives is 3
The number of negatives is 1
The total is 5
The average is 1.25
2. A pentagonal number is defined as n(3n-1)/2 for n = 1, 2, . . ., etc.. Therefore,
the first few numbers are 1, 5, 12, 22, .. . . Write a method with the following
header that returns a pentagonal number:
public static int getPentagonalNumber(int n)
For example, getPentagonalNumber(1) returns 1
and getPentagonalNumber(2) returns 5. Write a test program that uses this method
to display the first 100 pentagonal numbers with 10 numbers on each…
1. Write a program that does the following:
- reads an unspecified number of integers
- determines how many positive and negative values have been read
- computes the total and average of the input values (not counting zeros).
Your program ends with the input 0.
Display the average as a floating-point number.
If the entire input is 0, the program displays "No numbers are entered except 0".
Here is a sample run:
Enter integers ending with e: 1 2 -1 3 e
The number of positives is 3
The number of negatives is 1
The total is 5
The average is 1.25
2. A pentagonal number is defined as n(3n-1)/2 for n= 1, 2, ..., etc.. Therefore,
the first few numbers are 1, 5, 12, 22, .... Write a method with the following
header that returns a pentagonal number:
public static int getPentagonalNumber(int n)
For example, getPentagonalNumber(1) returns 1
and getPentagonalNumber(2) returns 5. Write a test program that uses this method
to display the first 100 pentagonal numbers with 10 numbers on each line.…
Chapter 8 Solutions
Computer Systems: A Programmer's Perspective (3rd Edition)
Ch. 8.2 - Prob. 8.1PPCh. 8.4 - Prob. 8.2PPCh. 8.4 - Prob. 8.3PPCh. 8.4 - Prob. 8.4PPCh. 8.4 - Practice Problem 8.5 (solution page 797) Write a...Ch. 8.4 - Practice Problem 8.6 (solution page 797) Write a...Ch. 8.5 - Practice Problem 8.7 (solution page 798) Write a...Ch. 8.5 - Prob. 8.8PPCh. 8 - Prob. 8.9HWCh. 8 - In this chapter, we have introduced some functions...
Ch. 8 - How many hello output lines does this program...Ch. 8 - How many "hello' output lines does this program...Ch. 8 - Prob. 8.13HWCh. 8 - How many hello output lines does this program...Ch. 8 - How many "hello lines does this program print?Ch. 8 - Prob. 8.16HWCh. 8 - Prob. 8.17HWCh. 8 - Consider the following program: Determine which of...Ch. 8 - How many lines of output does the following...Ch. 8 - Use execve to write a program called my1s whose...Ch. 8 - What are the possible output sequences from the...Ch. 8 - Write your own version of the Unix system function...Ch. 8 - One of your colleagues is thinking of using...Ch. 8 - Modify the program in Figure 8.18 so that the...Ch. 8 - Write a version of the fgets function, called...
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