1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vladimir1956 [14]
3 years ago
6

See the lseek_example.c file. Modify the lseek_example.c, such that it reads from an input file (named "start.txt") and will pri

nt to an output file (named "end.txt") every (1+3*i)th character, starting from the 1st character in the input file. In other words, it will print the 1st character, then skip 2 characters and print the 4th one, then skip 2 characters and print the 7th one, and so on.
For instance, for input file:
ABCDEFGHIJKLM
It will output:
ADGJM
Iseek_example.c file contant:
// C program to read nth byte of a file and
// copy it to another file using lseek
#include
#include
#include
#include
void func(char arr[], int n)
{
// Open the file for READ only.
int f_read = open("start.txt", O_RDONLY);
// Open the file for WRITE and READ only.
int f_write = open("end.txt", O_WRONLY);
int count = 0;
while (read(f_read, arr, 1))
{
// to write the 1st byte of the input file in
// the output file
if (count < n)
{
// SEEK_CUR specifies that
// the offset provided is relative to the
// current file position
lseek (f_read, n, SEEK_CUR);
write (f_write, arr, 1);
count = n;
}
// After the nth byte (now taking the alternate
// nth byte)
else
{
count = (2*n);
lseek(f_read, count, SEEK_CUR);
write(f_write, arr, 1);
}
}
close(f_write);
close(f_read);
}
// Driver code
int main()
{
char arr[100];
int n;
n = 5;
// Calling for the function
func(arr, n);
return 0;
}
Computers and Technology
1 answer:
andre [41]3 years ago
3 0

Answer:

See the lseek_example.c file. Modify the lseek_example.c, such that it reads from an input file (named "start.txt") and will print to an output file (named "end.txt") every (1+3*i)th character, starting from the 1st character in the input file. In other words, it will print the 1st character, then skip 2 characters and print the 4th one, then skip 2 characters and print the 7th one, and so on.

For instance, for input file:

ABCDEFGHIJKLM

It will output:

ADGJM

Iseek_example.c file contant:

// C program to read nth byte of a file and

// copy it to another file using lseek

#include

#include

#include

#include

void func(char arr[], int n)

{

// Open the file for READ only.

int f_read = open("start.txt", O_RDONLY);

// Open the file for WRITE and READ only.

int f_write = open("end.txt", O_WRONLY);

int count = 0;

while (read(f_read, arr, 1))

{

// to write the 1st byte of the input file in

// the output file

if (count < n)

{

// SEEK_CUR specifies that

// the offset provided is relative to the

// current file position

lseek (f_read, n, SEEK_CUR);

write (f_write, arr, 1);

count = n;

}

// After the nth byte (now taking the alternate

// nth byte)

else

{

count = (2*n);

lseek(f_read, count, SEEK_CUR);

write(f_write, arr, 1);

}

}

close(f_write);

close(f_read);

}

// Driver code

int main()

{

char arr[100];

int n;

n = 5;

// Calling for the function

func(arr, n);

return 0;

}

Explanation:

You might be interested in
You are attempting to print a document from your workstation to the network printer in your office. The print job failed when yo
Helen [10]

Answer:

An Incident

Explanation:

an incident is an unplanned interruption to a service

6 0
2 years ago
Look at the following partial class definition, and then respond to the questions that follow it:
zhannawk [14.2K]

Solution :

a.

public Book($\text{String title}$, String author, $\text{String publisher}$, int $\text{copiesSold}$) {

 this.$\text{title}$ = $\text{title}$;

 this.$\text{author}$ = $\text{author}$;

 this.$\text{publisher}$ = $\text{publisher}$;

 this.$\text{copiesSold}$ = $\text{copiesSold}$;

b). $\text{public String}$ getTitle() {

 return $\text{title}$;

}

$\text{public void}$ setTitle($\text{String title}$) {

 this.$\text{title}$ = $\text{title}$;

}

$\text{public String}$ getAuthor() {

 return author;

}

$\text{public void}$ setAuthor(String author) {

 this.$\text{author}$ = $\text{author}$;

}

$\text{public String}$ getPublisher() {

 return $\text{publisher}$;

}

$\text{public void}$ setPublisher(String $\text{publisher}$) {

 this.$\text{publisher}$ =$\text{publisher}$;

}

public int get$\text{copiesSold}$() {

 return $\text{copiesSold}$;

}

$\text{public void}$ set$\text{copiesSold}$(int $\text{copiesSold}$) {

 this.$\text{copiesSold}$ = $\text{copiesSold}$;

}

4 0
2 years ago
which feature will configuring a SOHO network in which all ports on the public untrusted network will be forwarded to one workst
Ugo [173]

Answer:

Demilitarized zone (DMZ).

Explanation:

Demilitarized zone is a kind of security assurance scheme used by network administrator to detect network breach even before it gets to the secured network.

The private LAN is protected with a firewall and a DMZ is configured to allow access by untrusted users, on another workstation, which is a duplicate of the companies private local address.

7 0
3 years ago
How is the United Kingdom planning to use driverless cars beginning in 2015?
AlekseyPX
You need answers to the question

8 0
3 years ago
Read 2 more answers
Create a class called Circle, which has (i) an attribute radius, (ii) a method that returns the current radius of a circle objec
nadya68 [22]

Answer:

Explanation:

The following class is written in Java. I created the entire Circle class with each of the methods and constructor as requested. I also created a tester class to create a circle object and call some of the methods. The output can be seen in the attached picture below for the tester class.

class Circle {

   double radius;

   public Circle(double radius) {

       this.radius = radius;

   }

   public double getRadius() {

       return radius;

   }

   public void resetRadius() {

       radius = 0;

   }

   public double calculateArea() {

       double square = Math.pow((Math.PI * radius), 2);

       return square;

   }

}

8 0
2 years ago
Other questions:
  • A size of a jumbo candy bar with rectangular shape is l x w x h. Due to rising costs of cocoa, the volume of the candy bar is to
    9·1 answer
  • How to connect to my wireless printer for dummies?
    12·1 answer
  • A student is helping a friend with a home computer that can no longer access the Internet. Upon investigation, the student disco
    9·1 answer
  • A pedometer treats walking 2,000 steps as walking 1 mile. Write a program whose input is the number of steps, and whose output i
    15·2 answers
  • What method is used to manage contention-based access on a wireless network?
    7·1 answer
  • 2. An evil twin attack that broadcasts a legitimate SSID for an unauthorized network is an example of what category of threat? A
    9·1 answer
  • Engineers at Edison Laboratories developed a _____ strip that allowed them to capture sequences of images on film.
    14·2 answers
  • Which of the following examples can be solved with unsupervised learning?
    8·1 answer
  • What are some positive impacts technology has on the environment?​
    5·2 answers
  • Kevin would like to ensure that his software runs on a platform that is able to expand and contract as needs change. Which one o
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!