Pointers: Describe lock and key solution to dangling pointers
Answers
The lock and key solution is a technique used to address the issue of dangling pointers in programming.
Understanding lock and key solution to dangling pointersDangling pointers occur when a pointer continues to reference a memory location after the object it points to has been deallocated. This can lead to memory leaks, crashes, or undefined behavior.
The lock and key method introduces a unique key, also known as a "ticket," associated with each allocated memory block.
When a pointer accesses a memory block, it must provide the correct key to access the data. When the memory is deallocated, the key is invalidated, preventing access by any dangling pointers.
This technique ensures that any attempt to access the deallocated memory using a dangling pointer results in a failed key check, effectively "locking" the memory from unintended access.
This prevents undefined behavior and promotes better memory management in software applications. By using the lock and key solution, developers can significantly reduce the risk of issues caused by dangling pointers in their code.
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Related Questions
TRUE OR FALSE: If I ask you to span multiple rows in your table, that means that two columns will merge together
Answers
Answer:
T
Explanation:
I took the test and got it right
What are the qualities of strong leaders? Check all that apply. They inspire others. 1)They are easily influenced by others. 2)They are outstanding role models. 3)They have a strong sense of purpose. 4)They lack self-confidence.
Answers
Explanation:
I would pick 2 and 3 based on process of elimination
Which of these is a compound morphology?
A.
bookkeeper = book + keeper
B.
happiness = happy + ness
C.
books = book + s
D.
banker = bank + er
Answers
Answer:
D.
Explanation:
yarn po answer ko po eh
because bank +er =banker
think of a new app idea. What inputs does it need? What outputs? What types of processing does it use to change the input to output? Answer the following questions about you app
App idea
Inputs
Outputs
Types of processing
How processing turns helps turn input to output
Answers
The application idea is such an app created to double any valid input entered by the user
The process of designing the applicationThe application idea
The application idea is to design an app that doubles the input entered by the user
Inputs
There is only input in this application, and the datatype of the input variable is number.
The data types under the "number" category are:
IntegerFloatDecimalDoubleRealOutputs
There is only input in this application, and the datatype of the input variable is number.
Just like the input variable, the data types under the "number" category are:
IntegerFloatDecimalDoubleRealTypes of processing
The application uses an arithmetic type of processing
i.e. y = x + x or y = 2 * x or y = x * 2
How processing turns helps turn input to output
The processing turns the input into output by performing the arithmetic operation on the input
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Please complete the following program according to the specification given. Partial credit will be given for incomplete answers, so provide as much of the answer as you can. Remember that all program segments are to be written in JAVA.
1.Write a method split() which takes an argument String s and prints each character of s with a comma(“,”) in between each character.
Example
split(“1234”) prints: “1,2,3,4”
split(“Hi, Mr. Programmer!”) prints “H,i,,, , M,r,., P,r,o,g,r,a,m,m,e,r,!”
split(“”) prints “”
static public void split(String s) {
Answers
Using the knowledge in computational language in JAVA it is possible to write a code that write a method split() which takes an argument String s and prints each character of s with a comma(“,”) in between each character.
Writting the code:import java.io.*;
public class Test
{
public static void main(String args[])
{
String Str = new String("Geeks-for-Geeks");
// Split above string in at-most two strings
for (String val: Str.split("-", 2))
System.out.println(val);
System.out.println("");
// Splits Str into all possible tokens
for (String val: Str.split("-"))
System.out.println(val);
}
}
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We use the term "problem" to refer to lots of different situations. Brainstorm as many different kinds of problems as you can and list them below. (You must list at least two problems)
Answers
world hunger, abusive situations, homelessness, any mental health issue, bullies, issues with the law, and thing that can have a negative effect on you or a group of people
what is saturating arithmetic and what are its advantages and disadvantages in typical multimedia applications?
Answers
Saturation arithmetic is a version of arithmetic under which all operations are limited to a fixed range.It aids in the modelling of actual physical processes and is inapplicable to standard mathematical operations.
What are the benefits of saturation in arithmetic?The necessity for overflows and underflows on MMX instructions is removed by saturating arithmetic. A result is saturated to the nearest permissible value if it is outside of boundaries. By minimising wraparound effects, saturating arithmetic is advantageous for many multimedia applications.
What is saturation arithmetic' flaw?On a system that can only perform modular arithmetic operations, it is difficult to efficiently implement saturation since basic solutions necessitate branches that cause significant pipeline delays.
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Assignment: Blues Progression
Blues is a sub-genre of jazz that follows some specific guidelines: specifically, the Blues scale and the Blues chord progression.
In this assignment, you’ll write out a 12-bar Blues chord progression. This assignment is a MuseScore assignment. Do not turn in this document for grading.
Directions:
1. Create a new document in MuseScore
a. For the title, write “MuseScore Assignment: Blues”.
b. For the composer, write your name., then click "next".
c. Under "general", choose “Grand Staff”, then click “Next”.
d. Choose G major for your key signature (1 sharp), then click next.
e. Choose “Piano” (in the Keyboards section) for your instrument. (This step may or may not show for you. It's ok either way!)
f. Choose 4/4 for your Time Signature and 12 measures for number of measure.
g. Click “Finish”.
2. In the Bass Clef, write out a 12-bar Blues Chord Progression.
a. Use whole notes for your chords
b. I – I – I – I – IV – IV – I – I – V7 – IV – I – V7
Save your assignment (with your name!) and submit it to the Composition: Blues Progression Dropbox basket. Turn in the MuseScore file only.
Answers
Explanation:
I can provide you with the 12-bar Blues chord progression as you requested:
In the key of G major:
I (G) – I (G) – I (G) – I (G)
IV (C) – IV (C) – I (G) – I (G)
V7 (D7) – IV (C) – I (G) – V7 (D7)
The Roman numerals in parentheses represent the chords to play in each measure, and the chord names outside the parentheses indicate the actual chords to play in the key of G major.
List 5 general safety precautions that you can take when working with a computer equipment.
Answers
Answer:
Wear the right clothes, unplug all equipment, keep your work area clean, check for damaged parts, and do not force components into ports.
Explanation:
These are all general safety precautions when working with computer equipment.
which fields in the contact form is used to control the order in which contacts are displayed in the current view?
Answers
Answer:
The answer is "File As"
Explanation:
The file is a data collection, that is processed either by filename in a single system. It could be a text, an image, a sound or a streaming server, a software collection, an and app, and other data collection. In this, the File As the field is used to order in connections that are displayed in the original understanding was controlled by using the contact-form sector.
what is system software ? write it's type ?
Answers
The types are Operating system, Utility software and language processor
Remove all non-alphabetic characters
Write a program that removes all non-alphabetic characters from the given input. Assume the input string will not exceed 50 characters.
Ex: If the input is:
-Hello, 1 world$!
the output is:
Helloworld
The program must define and call a function named RemoveNonAlpha that takes two strings as parameters: userString and userStringAlphaOnly. userString is the user specified string from the program input. Function RemoveNonAlpha() then assigns userStringAlphaOnly with the user specified string without any non-alphabetic characters. void RemoveNonAlpha(char userString[], char userStringAlphaOnly[])
Answers
This code snippet defines the RemoveNonAlpha function which takes two parameters: userString (the input string with non-alphabetic characters) and userStringAlphaOnly (an empty array that will store the modified string). The function uses a while loop to check each character in userString. If the character is alphabetic, it's added to userStringAlphaOnly. Finally, a null terminator is appended to userStringAlphaOnly to mark the end of the string.
Void RemoveNonAlpha(char userString[], char userStringAlphaOnly[])
int main() {
char userString[] = "Helloworld!123";
char userStringAlphaOnly[100];
RemoveNonAlpha(userString, userStringAlphaOnly);
printf("Original string: %s\n", userString);
printf("Alphabetic-only string: %s\n", userStringAlphaOnly);
return 0;
}
void RemoveNonAlpha(char userString[], char userStringAlphaOnly[]) {
int i = 0;
int j = 0;
while (userString[i] != '\0') {
if (isalpha(userString[i])) {
userStringAlphaOnly[j] = userString[i];
j++;
}
i++;
}
userStringAlphaOnly[j] = '\0';
}
This code snippet defines the RemoveNonAlpha function which takes two parameters: userString (the input string with non-alphabetic characters) and userStringAlphaOnly (an empty array that will store the modified string). The function uses a while loop to check each character in userString. If the character is alphabetic, it's added to userStringAlphaOnly. Finally, a null terminator is appended to userStringAlphaOnly to mark the end of the string.
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Here's one way to implement the RemoveNonAlpha function in C:
#include <stdio.h>
#include <ctype.h>
void RemoveNonAlpha(char userString[], char userStringAlphaOnly[]) {
int i = 0, j = 0;
while (userString[i] != '\0') {
if (isalpha(userString[i])) {
userStringAlphaOnly[j] = userString[i];
j++;
}
i++;
}
userStringAlphaOnly[j] = '\0'; // don't forget to add null terminator
}
int main() {
char userString[51], userStringAlphaOnly[51];
printf("Enter a string (max 50 characters): ");
fgets(userString, 51, stdin);
RemoveNonAlpha(userString, userStringAlphaOnly);
printf("Alpha-only string: %s\n", userStringAlphaOnly);
return 0;
}
The RemoveNonAlpha function uses a while loop to iterate over each character in the input string. It uses the isalpha function from the ctype.h library to check if each character is an alphabetic character. If it is, the character is added to the output string (userStringAlphaOnly) at the current index (j). The loop continues until it reaches the null terminator at the end of the input string. Finally, the function adds a null terminator to the output string.
In the main function, we declare two char arrays with a size of 51 (to accommodate the input string plus a null terminator). We use fgets to read in the input string from the user. Then we call the RemoveNonAlpha function and pass in the input string and an empty output string. Finally, we print the output string.
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Directions: Fill in the blanks with the appropriate word in each statement below.
Choose your answers from the given pool of words inside the box.
Place your answer in your SMAW activity notebook.
Toss
Calipers
Blades
Clean
Lubricant
Sharpened
Maintenance
Cleaning
Covered box
Flat Scraper
1.
are sharpened with a file or on an oilstone, forming a bevel on one
side only.
2. Store tools in a
dry storage area.
3.
is a substance introduce to lessen friction between moving
surfaces.
4.Never
scrapers into boxes or onto other tools when not in use.
Their edges will be dulled.
5. Sharpen
of cutting tools.
6.
are precision instruments and must be used and handled with
care at all times.
7.
Simple process applied to hand tools.
8. Some tools need to be
such as blades of knife, cold chisel,
punches, and many others.
9. Keep micrometers in a
on the job and wipe an anvil and spindle
with soft, slightly oiled rag each time after using
of hand tools and machines are both primordial concerns of a
10.
repair technician in the welding shops or in the welding product
Answers
Answer:
sbysgscd CD CD vdhdudiididjehgegeueuheve gf hdgowincobwbciehidgwdgiwigwdigxifqugwljvwvwxi2dvwvwxixwvwxvqvwivqi
xwv2digwxivwiw
wxvixbowowxowcohwco2ch2od
odhowhowcowcohwxohwdowdjeciwr
hiwdodwobwdvqoo230ie
9qhowwdhwdigwdoieexohxiefbeoc
hwdhefgdegedogex
Explanation:
9hwx9hex9hexobeb8xgx9jcr
jd2oh2ih2xi2dd2oxivqsg8xwohjgwxohdeohwxihwdoeciwxgiweiguofyoe5u5ew46w57lrroyvyreiyfe1ei2ei2idxwdooydyofpiwigpwxwduo1zuo1dif3o4y
2hupv2rxou2xu2du2d
ou1svxiexuowvouqdip2dpwcuowd2u
qxigqedouovqudipgqipwgipcwpi2di2ipegpi2efpi2dipe2ip1dgxip2ce1piecg1peix1ou2co2dpu1ecgip1eip1deg1euouoeupdeuofour68ditsoysrs27ro457uoeigpexupgeip3dpiwdguofoyiyyidiyufuouodyidyouoouupwd9dediwgip2sou2sg923ugo13uefcidyid57gdqigeobxri1eiyf2ipechkcyidouxtuxuocziycyiyyiyiy2idyigxyiyiyiydiyyiiyciyc2ouvyidyiyidydyidiyf7uo2vu1e
In some small organizations (less than 5 computers), the document filing process usually occurs locally. In other words, each computer locally owns the documents that are produced, since these are not regularly required by more than one person. A copy of these is made manually to keep them and prevent them from being lost or altered. However, as the number of computers grows, the document management process requires a solution that allows, among other things, availability, access, the most recent version, being stored in a central location and being trustworthy. Knowing the solutions studied for it, indicate: What aspects should be taken into consideration before establishing a file management system in a medium or large operation?
Answers
The aspects that should be taken into consideration before establishing a file management system in a medium or large operation are Data Storage Location, organizing documents into a hierarchical system, establish a Logical File Naming System and tracking Document Versions
What is File management System?
For file maintenance (or management) tasks, a file management system is utilized. It is a category of software that controls how computer systems' data files are organized.
A file management system, which is designed to manage individual or group files, such as unique office documents and records, has limited capabilities. Report information, including the owner, the date of creation, the stage of completion, and other features useful in an office setting, may be displayed.
A file manager is another name for a file management system.
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8.2 code practice edhesive?
Answers
Answer:
temperatures = []
i = 0
while i < 5:
try:
t = int(input('Enter a temperature: '))
temperatures.append(t)
i += 1
except ValueError:
print('Enter a number')
print(temperatures)
Explanation:
Hope this helps!
What is the decimal equivalent to 111111?
Answers
Answer:
63
Explanation:
Answer:
63
Explanation:
So, 63 is the decimal equivalent of the binary number of 111111.
hyperactive media sales has 10 windows 7 laptop computers used by sales-people in the organization. each laptop computer has several customized applications that are used during the sales process as well as customer relationship management software. all of the applications on the laptops are difficult to configure and have large data files. if all of the laptops have current hardware, what is the easiest way to install windows 10 on them?
Answers
The easiest way to install Windows 10 on the 10 laptops used by Hyperactive Media Sales would be to perform a clean installation using a Windows 10 installation media.
1. Create a Windows 10 installation media: Download the Windows 10 Media Creation Tool from Microsoft's website and create a bootable USB drive or DVD.
2. Prepare the laptops: Back up all important data and custom application configurations from the Windows 7 laptops, as the upgrade process may overwrite or remove some files
3. Obtain the necessary drivers: Ensure that all necessary drivers for the laptops' hardware are available for Windows 10. You can check the manufacturers' websites for the latest drivers, or use a driver update tool.
4. Obtain the necessary applications: Make sure to have any custom applications and customer relationship management software needed for the sales process available for installation on the new Windows 10 installation
5. Configure the laptops' BIOS/UEFI settings: Ensure each laptop is set to boot from the USB drive or DVD that contains the Windows 10 installation media.
6. Insert the Windows 10 installation media: Connect the bootable USB drive or DVD to one of the laptops and restart it. The laptop should boot into the Windows 10 installation setup.
7. Perform the installation: Follow the on-screen instructions to perform a clean installation of Windows 10. This will involve wiping the hard drive and installing Windows 10 from scratch. Be sure to select the correct edition of Windows 10 (Home, Pro, etc.) and enter the product key if prompted.
8. Install necessary drivers and applications: After the installation is complete, install any necessary drivers and applications that were obtained in steps 3 and 4.
9. Restore data: Restore any important data that was backed up in step 2.
10. Verify the installation: After the installation is complete, verify that all custom applications and customer relationship management software are working correctly. If necessary, reinstall or reconfigure the applications.
11. Repeat the process: Repeat steps 6-10 for each of the remaining laptops.
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What is a protocol in digital technology plwwes help
Answers
Protocol, in computer science, a set of rules or procedures for transmitting data between electronic devices, such as computers. In order for computers to exchange information, there must be a preexisting agreement as to how the information will be structured and how each side will send and receive it.
Write a code in python that guesses a hardcoded answer and keeps on asking the user until the user gets the answer correct. The cmputer should be telling the user if the number they are guessing is too low or too high.
Answers
import random
#You can change the range.
answer = random.randint(1,1000)
counter = 0
while(True):
guess = int(input("Make a guess: "))
message = "Too high!" if guess>answer else "Too low!" if guess<answer else "You won!"
print(message)
if(message=="You won!"):
print("It took",counter,"times.")
break
else:
counter+=1
what is syntax?
a. rules for using tags correctly in HTML
b. text containing hyperlinks that can go to other hypertext pages
c. information about how an element should be used by a web browser
d. text used to mark text or images on a webpage
Answers
Answer:
a
(would really appreciate the brainliest)
Answer- A: rules for using tags correctly in HTML.
Explanation: Correct on Edg 2020.
The lesson discusses five different ways to resolve conflict. Select them from the following list.
1. compliance
2. escalation
3. dominating
4. compromising
5. dissent
6. denial
7. confronting
8. smoothing
Answers
The five different ways of resolving conflict are:
CompromisingConfrontingSmoothingComplianceComplianceHow to resolve conflict ?Achieving a middle ground that is agreeable to both parties and meets some of their needs, characterizes compromising. The process of confronting involves direct discussion of the issue in order to arrive at a mutually acceptable resolution.
The technique of smoothing implies downplaying differences between opposing sides and instead focusing on areas where they find agreement to come to an understanding. Compliance subsumes accepting the demands or desires of the other party while granting their wishes.
Dominating, meanwhile, constitutes one side imposing its power or influence over the other as a means of getting what it wants, thereby forcing a resolution.
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How do I put this kind of question into an sqldeveloper (How many country names do not start with an 'A' or an 'E' letter?)
Answers
Answer:
In short names, there is Cyprus, Comoros, DRC, Morocco, Djibouti, Burundi, Togo, Congo, Fiji, and Kosovo. However if we use only official names, there is only one country on the whole planet that has no A's and E's, and that country is the Kingdom of Morocco.
Explanation:
hope it helps
Answer:
select * from country where name not like 'A%' and loginid not like 'E%'
Explanation:
The percent sign acts as a wildcard, but it only works in conjunction with the 'like' construct.
What is the value of number after the following statements execute?
int number; number 18 4+ 2
a) 6
b) 3
c) 4
d) 6.5
e) the statement is invalid
Answers
The correct option in this case would be "e) the statement is invalid."
The value of the number after the given statements execute can be determined by evaluating the mathematical expression. Based on the given statements, the expression "4 + 2" is added to the value of the number, which is initially undefined.
However, there is an error in the syntax of the statement "number 18," as it seems to be incomplete or incorrect. Therefore, the statement itself is invalid.
In programming, the correct syntax to assign a value to a variable would be to use the assignment operator "=", such as "number = 18." Without the assignment operator, the statement "number 18" is not a valid assignment or mathematical operation.
Since the statement is invalid, the value of the number cannot be determined from the given code. The correct option in this case would be "e) the statement is invalid."
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Which of the following best describes today’s average gamer?
The average age is eighteen, and many more males play than females.
The average age is thirty, and only slightly more males play than females.
The average age is thirty, and many more males play than females.
The average age is eighteen, and only slightly more males play than females.
Answers
PLEASE HELP
Write a pseudo code for an algorithm to wrap a gift.
Answers
in computertional geometry the gift wrapping algorithm is an algorithm for computing the context hull of a given set of points
what is the process where a computer starts up and automatically loads the operating system
Answers
Answer:
What is Booting
Explanation:
The process of bringing up the operating system is called booting (originally this was bootstrapping and alluded to the process of pulling yourself up "by your bootstraps"). Your computer knows how to boot because instructions for booting are built into one of its chips, the BIOS (or Basic Input/Output System) chip.
Did this help?
Brainly, thank you, rating are all very much appreciated!
Smile ; ) - Miss Hawaii
Explanation:
The process of loading the operating system into memory is called bootstrapping, or booting the system.
After evidence is discovered in logs or alerts, how long does it typically take for someone in a firm to discover there is a security compromise in a system
Answers
After evidence is discovered in logs or alerts, it typically takes 197 days for someone in a firm to discover there is a security compromise in a system. According to the 2020 IBM Cost of a Data Breach report, it takes an average of 197 days for a company to recognize and identify a data breach.
A step-by-step explanation of this is as follows:
Companies must first identify potential compromises within their networks and systems. Alerts or logs will often reveal evidence that something is wrong within the system.
Investigations must then be carried out to determine the root cause of the warning. This can take some time since many factors, such as the system's complexity and the magnitude of the breach, may affect the amount of time it takes for the investigation to be completed.
Once the investigation is complete, the company may decide to alert the appropriate authorities, assess damages, and take remedial action to mitigate future breaches. The whole process can take weeks or even months, depending on the nature of the breach, the time and resources available, and the procedures in place to ensure proper response to data breaches.
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A school is conducting a survey of students to learn more about how they get to school. Students were asked how they travel to school, how long it takes them to get to school, what time they arrive at school, and for a description of their most significant challenges when traveling to school. Several rows of the data collected are shown in the table below.
Which column is data will likely be most difficult to visualize or analyze?
A. How Travel
B. How Long
C. Time Arrive
D. Biggest Challenges
Answers
Answer: D.
Explanation: I can't say this is the correct answer for sure since the chart is not there but I'm pretty sure the answer is D. This video might help you out on the subject. https://youtu.be/dQw4w9WgXcQ
The column in which the data will likely be most difficult to visualize or analyze is Biggest Challenges. The correct option is D.
What is survey?A survey is a research method that involves gathering information from a group of people through the use of pre-designed questions or structured interviews.
A survey's purpose is to collect information about people's opinions, beliefs, attitudes, behaviors, or experiences on a specific topic.
Biggest Challenges is the column in which the data will most likely be difficult to visualize or analyze.
The table's other columns, How Travel, How Long, and Time Arrive, all contain quantitative data that can be easily visualized and analyzed.
The How Travel column, for example, could be represented by a pie chart or bar graph depicting the percentage of students who walk, bike, drive, or take the bus to school.
Thus, the correct option is D.
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Compare and contrast iOS in a short essay and explain which one is better. Also, write the significant points as bullet points.
Do not troll; wrong answers will be deleted and reported.
The best answer will be marked brainliest!
Answers
Android is a more open operating system than iOS. In iOS, users hardly have any system permissions, whereas, in Android, users may easily modify their phones. There is Android software for numerous brands, like Samsung, LG, etc.
What is the system?A system is a group of moving or interrelated elements that act according to a set of rules to form a unified whole. A system, surrounded and influenced by its situation, is described by its boundaries.
The advantages of the IOS are considered as.
iOS By using it they were provided with the best interface and understanding.iOS is a most secure operating system than any other.the iOS operating system is best for Businesses and Professionals.Therefore, As a result, IOS devices are very much significant and useful. There are different features are there in it.
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Question 1 : Mercury Technical Solutions has been using SSL in a business-to-business environment for a number of years. Despite the fact that there have been no compromises in security, the new IT manager wants to use stronger security than SSL can offer. Which of the following protocols is similar to SSL but offers the ability to use additional security protocols? This task contains the radio buttons and checkboxes for options. The shortcut keys to perform this task are A to H and alt+1 to alt+9.
Answers
Answer:
The answer is "TLS and the DBMS".
Explanation:
In given- question there are two questions were included, which can be defined as follows:
The term, Transportation Layer Security is used as "TLS", that is an SSL security protocol that allows other security procedures should be used. It is an upgraded version of SSL, that works in very much the same way of SSL, and by encrypting information and data transfer.
The DBMS is used to store, access and handle data like layout or domain name and record and file structure of the database, it meets in the business requirements, consumers can create their respective databases including DBMS.