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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Expert Solution & Answer
Chapter 10, Problem 10.10HW
Explanation of Solution
Modified code from figure 10.5:
The modified code for “cpfile.c” is shown below:
//Include header file
#include <stdio.h>
#include "csapp.h"
//Main function
int main(int argc, char* argv[])
{
//Declare "int" variable
int n;
//Create the object for read buffer of type
rio_t rio;
//Declare "MAXLINE" for memory
char buf[MAXLINE];
/* Check the command line arguments. If the command line contains two argument, then copy the infile to standard output */
if (argc == 2)
{
/* Store the descriptor number in "fd" */
int fd = Open(argv[1], O_RDONLY, 0);
while ((n = Rio_readn(fd, buf, MAXBUF)) != 0)
Rio_writen(STDOUT_FILENO, buf, n);
//Exit the process
exit(0);
}
/* Otherwise copy a text file from standard input to...
Expert Solution & Answer
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Students have asked these similar questions
Use the cubicSpline module to write
programs that interpolate between a given
data point with a cubic spline. The
program must be able to evaluate the
interpolant for more than one x value. As a
test, use the data points specified in the
previous Example and calculate the
interpolants at x = 1.5 and x = 4.5 (due to
symmetry, these values must be the
same)
import numpy as np
from cubicSpline import
*
xData = np.array([1,2,3,4,5], float)
yData = np.array([0,1,0,1,0], float)
k = curvatures (xData, yData)
while True:
try: x = eval(input("\nx ==> "))
except SyntaxError: break
print("y=", evalSpline (xData, yData, k, x))
input ("Done. Press return to exit")
Exercise
Fix the Cubic Spline Program
There is an error in the Cubic Spline
program, fix it and evaluate the values of x
1/2
= 1.5 and x = 4.5, where the results of both
values must be the same.
Modify the below program that the input values representingfractions are stored with denominators that are positive integers. You cannot require the user to only enter a positive denominator value; the user should not be inconvenienced by such a restriction. For example, whilst values of 1 / -2 are acceptable inputs for a fraction, the output representation should be -1 / 2. Your solution should check the denominator input; if it is negative, swap the sign of both numerator and denominator instance variables.
//Import the essential package
import java.util.ArrayList;
import java.util.Scanner;
//Define the class Fraction
class Fraction
{
private int n, d;
public Fraction()
{
//Initialize the values
this.n = this.d = 0;
}
public Fraction(int n, int d)
{
//Initialize the variables
this.n = n;
this.d = d;
}
//Define the getter function getNum() that returns the numerator
public int getNum()
{…
Consider the following common task done repeatedly:• Read the next input (x = read())• If the input is not valid (valid(x)), exit the loop• Print the input read (print(x))• Repeat the loop
Using C++ syntax:Write the loop above using a pretest loop, posttest loop and a user-located loop control mechanisms. Which one is more readable? Why?
Chapter 10 Solutions
Computer Systems: A Programmer's Perspective (3rd Edition)
Ch. 10.3 - Prob. 10.1PPCh. 10.8 - Practice Problem 10.2 (solution page 915) Suppose...Ch. 10.8 - Practice Problem 10.3 (solution page 915) As...Ch. 10.9 - Prob. 10.4PPCh. 10.9 - Practice Problem 10.5 (solution page 916) Assuming...Ch. 10 - Prob. 10.6HWCh. 10 - Prob. 10.7HWCh. 10 - Write a version of the statcheck program in Figure...Ch. 10 - Consider the following invocation of the...Ch. 10 - Prob. 10.10HW
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