Which of these options demonstrate how to create an Interface Class in C++
Answers
The option that demonstrates how to create an Interface Class in C++ is option 3 that is :
class Interface
{
public:
virtual int methodA( ) = 0;
virtual int methodB( ) = 0;
};
In C++, an interface is typically defined as a class containing pure virtual functions (virtual functions with no implementation). These pure virtual functions provide a set of methods that a derived class must implement.
Option 1 and 2 are not valid syntax in C++. Option 4 provides declarations for the virtual functions but does not make them pure virtual. Therefore, a class that inherits from this Interface class could still be instantiated, which is not the intended use of an interface. Option 5 provides implementations for the methods, which is not allowed in an interface.
Therefore the correct option is option 3.
The question should be:
Which of these options demonstrate how to create an Interface Class in C++
1.
virtual class Interface
{
public:
virtual int methodA( ) = 0;
virtual int methodB( ) = 0;
};
2.
class Interface
{
public:
virtual int methodA( ) { } = 0;
virtual int methodB( ) { } = 0;
};
3.
class Interface
{
public:
virtual int methodA( ) = 0;
virtual int methodB( ) = 0;
};
4.
class Interface
{
public:
virtual int methodA( );
virtual int methodB( );
};
5.
class Interface
{
public:
int methodA( );
int methodB( );
};
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Related Questions
excel functions are prebuilt formulas within excel.
Answers
Formulas are mathematical equations that integrate cell references, excel values, and operators to compute results. It is not necessary to write the underlying formula when using functions because they are prebuilt formulas that can be rapidly fed values.
What do Excel's functions and formulas mean?Functions are pre-written formulas that perform calculations using specific variables, also known as inputs, in a predetermined order or structure. Functions can be used to do calculations of any complexity. The Formulas tab on the Ribbon contains the syntax for all of Excel's functions.
What is the name of the pre-written formulas in Excel?An already written formula is a function. A function performs an operation on a value (or values), then returns a new value (or values.)
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After selecting the heading and opening the Style dialog box, Jemima now wants to open the Modify Style dialog box. How does she do this? by clicking the Heading 2 drop-down arrow by clicking the Heading 1 drop-down arrow by clicking the Heading 1 Style in the Style gallery by clicking the Heading 2 Style in the Style gallery.
Answers
b
i did it amd got a 100
nvm
Answer: By clicking the heading 1 drop-down arrow
Explanation:
Which of the following algorithms has the smallest time complexity? A. binary search B. insertion sort C. linear search D. merge sort
Answers
An algorithm which has the smallest time complexity is: B. insertion sort.
What is time complexity?Time complexity can be defined as a measure of the amount of time that is required by an algorithm to run till its completion of the task with respect to the length of the input.
Basically, the time complexity of an algorithm is defined by f(N) if; for all "N" and all inputs with length "N" the execution of the algorithm takes a maximum of f(n) steps. Therefore, the time complexity of an algorithm is also a measure of the efficiency of an algorithm.
In this scenario, an algorithm which has the smallest time complexity is insertion sort with O(N²).
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What is the value of 4+2 +6r – tr when t = - 3 and r = 5?
Enter your answer in the box.
Answers
Note that in the math problem given, the the value of 4+2 +6r – tr when t = - 3 and r = 5 is 51.
Why is this so?To evaluate the expression 4+2+6r-tr when t = -3 and r = 5,
we substitute the given values for t and r and simplify as follows
4 + 2 + 6r - tr = 4 + 2 + 6(5) - (-3)(5)
= 4 + 2 + 30 + 15
= 51
When we substitute a factor for an expression, we can only do so when the statement has equated that factor with the expression.
So the value of the expression 4+2+6r-tr when t = -3 and r = 5 is 51.
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in a basic program with 3 IF statements, there will always be _________ END IIF's.
a)2
b)3
c)4
Answers
Answer:
c)4
Explanation:
Hope it could helps you
Create a flowchart that will accept 10 whole numbers one at a time and print the highest and the lowest. Use Switch.
Answers
I will create a sequence of steps that would accept 10 whole numbers one at a time and print the highest and the lowest in Java:
Import javax.swing.JOptionPane;
public class loop_exer2 {
public static void main(String agrs[])
{ String input; int trial=10, sc=0, h=0, l=0, test=0;
System.out.print("Scores: ");
for (int ctr=1;ctr<=10;ctr ) {
input=JOptionPane.showInputDialog("Enter the Scores [" trial "] trials "); sc=Integer.valueOf(input); System.out.print(sc ", ");
if(test==0){h=sc;l=sc;test=1;}
if(sc>h){h=sc;}
else if(sc>h){
h=sc; {
else if(sc<1) {
l=sc;
}
JOptionPane.showMessageDialog (null, "Highest score is:" h "Lowest score is:" l);
System.out.println();
System.out.println ("Highest score is: " h);
System.out.println ( "Lowest score is: "l);
}
}
What is a Flowchart?This refers to a diagram which is used to represent the various steps which a system uses to create a step by step solution.
From the above code, there is the command to accept whole numbers in String and then request for them one at a time and after the computation, display the highest and lowest numbers.
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to display string or numeric data in a dialog box, use the group of answer choices print() method prompt() method alert() method write() method
Answers
To display string or numeric data in a dialog box, the appropriate method to use is the "alert()" method. This method is commonly used in web development to display information to the user in a pop-up box or dialog box format.
Explanation:
The alert() method can be used to display the string or numeric data in a dialog box. When the "alert()" method is called, a dialog box appears on the screen with the message contained within the parentheses of the method. The message can be a string or a numeric value, and can be hardcoded or dynamically generated from a variable or other data source.
For example, to display the message "Hello, world!" in a dialog box, the following code can be used:
alert("Hello, world!");
The "alert()" method can also be used to display more complex messages, such as the result of a calculation or the contents of a variable. For example:
var x = 5;
var y = 7;
var z = x + y;
alert("The sum of " + x + " and " + y + " is " + z);
This would display a dialog box with the message "The sum of 5 and 7 is 12".
Overall, the "alert()" method is a simple and effective way to display string or numeric data in a dialog box in web development.
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Several people work with data at Erica’s office. She enters data. One of her coworkers enters new product numbers. Another coworker searches for parts that need to be ordered. Erica’s company uses a _____.
spreadsheet
Web page
data warehouse
word processor
Answers
When you execute this block in Scratch, your computer is actually doing several things: retrieving values from memory representing the direction and position of the sprite, performing an algorithm to update these values, and changing the display in the window to match the updated state of the program. All of these actions are represented by just one single block.
Which of the following terms names the phenomenon which is best described by this statement?
a) Iteration
b) Sequencing
c) Compilation
d) Abstraction
Answers
Sequencing is the term that names the phenomenon which is best described by the given statement.
Sequencing refers to the order of logical arrangement whereby an instruction is executed in the proper order. This means that one process must be completed before the next command becomes valid and executes.
From the given statement, the computer is performing various operations in sequence which are:
Retrieving values from memoryPerforming algorithmChanging the displayThese functions are done by order, using a single block.
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Which are factors that go into a project plan? choose four answers
Scope
Outcome
Roles
Statement Benchmarks
Demographics
Benchmarks
This is digital design work
Answers
Answer:
The answer to this question is given below in the explanation section.
Explanation:
The four factors that go into project plan are:
ScopeOutcomeBenchmark and Role.The four factors key components of any project plan. without these factors project plan is incomplete. Because, the project has scope and output, the benchmark that is going to be achieved and role and responsibilities for doing specific tasks etc.
A project plan is a formally approved document that guides project execution and project control. They have planning assumption and decisions. They also facilitate communication.
Factors such as the goals, budget, timeline, expectation, and teamwork. The other factors includes the Scope, Roles, Statement Benchmarks and the Demographics.Hence the option A, C, D, and E are correct.
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The three most important factors that affect the distribution of resources are:
Answers
Answer:
The main factors that affect distribution of population are natural resources, climatic conditions, soils, cultural factors, age of human settlement, industrial development and means of transport and communication. The factors affecting distribution of population are described below one by one in a nutshell manner.
Explanation:
Hope it helps :)
Which of these lines of code will increment a variable?
A.
print(variable)
B.
count(variable)
C.
inc(variable)
D.
variable = variable + 1
Answers
Answer:
D
Explanation:
Answer:
D.
Explanation:
I got it right on the test.
Stear Corp. decides to deposit $1,000 in its bank account. This cash was paid from the cash register of the company. What will be the entry made by the accountant in the company’s journal?
Answers
Answer:
This is the WRONG answer
Cash Account (debit) 1,000
Cash in Bank Account (Credit) 1,000
Explanation:
Five factors that influence corrosion of metals
Answers
Factors that influence corrosion of metals are diffusion, temperature, moisture, humidity, and pollutants in atmosphere.
Corrosion happens when a refined metal is naturally converted to a more stable form such as its oxide, hydroxide or sulphide state this leads to deterioration of the material. It is a natural Phenomenon.
For example - Rusting of Iron, green coating on Copper vessels.
Factors that influence corrosion of metals are:
i) Exposure of metals to moisture.
ii) Presence of impurities.
iii) Exposure of the metals to air containing gases.
iv) Presence of acid in the atmosphere.
v) An increase in temperature increases corrosion.
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where can you specify to display a vertical line between columns?
Answers
Click the table. Click the Table Layout tab, and then under Settings, click Gridlines.
In Word, what is the symbol for a vertical line?How to Use a Keyboard to Enter the Vertical Line Character. On a keyboard, the pipe character is not obscured. It is directly above the Enter key. Turn on the numeric keypad, hold ALT, and then hit 1, 2, and 4 to enter the vertical bar character.
Go to Home > Insert > Insert Sheet Columns or Delete Sheet Columns after selecting any cell in the column. Alternatively, right-click the column’s header and select Insert or Delete.You may utilize the columns property, and there is a column-rule option that inserts a line properly between columns. You may read and see examples of what I mean here.
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An analog video is a video signal transmitted by an analog signal, captured on a
Answers
An analog video refers to a video signal transmitted by an analog signal, captured on a magnetic tape.
Magnetic audio tapes are used to record voice and music, and magnetic video tapes provide an inexpensive medium for direct and simultaneous recording of analog audio and video signals. Magnetic technology also has other uses for directly recording analog information such as alphanumeric data.
Thus, analog video is a signal that is transmitted through an analog signal and is captured on a magnetic tape.
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Which of the following is not a characteristic of a large database?
a) Optstore items in a filing cabinet.
b) Stores items in a computer such as music.
c) stores large amounts of items such as an online store.
d) can be used as a small recipe book.
Answers
Which method will return an empty string when it has attempted to read beyond the end of a file? a. read b. getline c. input d. readline d . readline
Answers
It is to be noted that the method will return an empty string when it has attempted to read beyond the end of a file is: "readline" (Option D).
What is an empty string?An empty string is a zero-length string instance, but a null string has no value at all. The character "" represents an empty string. It consists of a zero-character sequence. Null represents a null string.
The empty string is a specific instance in which the sequence has length zero and so contains no symbols. There is only one empty string since two strings are only distinct if their lengths or symbol sequences differ.
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is a category of cloud hosting where vendors provide hosted computers with an operating system, runtime environment, and middleware like a web server or a dbms. group of answer choices saas paas iaas baas taas
Answers
The category of cloud hosting where vendors provide hosted computers with an operating system, runtime environment, and middleware like a web server or a DBMS is Infrastructure as a Service (IaaS).
In IaaS, the cloud service provider offers virtualized computing resources such as virtual machines, storage, and networking infrastructure to users over the internet. This allows users to deploy and manage their own operating systems, applications, and middleware on the cloud infrastructure provided by the vendor. The vendor is responsible for the maintenance and management of the underlying hardware and infrastructure, while the user is responsible for managing the operating system, middleware, and applications.
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electronic audio and video devices are never used by terrorists for surveillance purposes t or f
Answers
Terrorists never employ electronic audio and video equipment for surveillance. This claim is untrue.
An audio electronic gadget is what?Up until the development of advanced digital technologies, analogue electric circuit design was the norm for audio electronics. Furthermore, due to its compatible digital nature, digital signals can be altered by computer software in a manner similar to how audio electronic equipment would.
What parts of electronics are there?Transistors, diodes, integrated circuits, and other parts are among the components. Electronics encompasses a number of subfields, including embedded systems, robotics, digital electronics, and analogue electronics. Telecommunications, signal processing, power electronics, etc. are examples of other fields.
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In the program below, what is the scope of strFirst?
def usernameMaker (strFirst, strLast):
return strFirst + strLast[0]
def passwordMaker (strA, numC):
if len(strA) > 4:
answer = dogName[0:3]
return answer + str(numC)
else:
return 'xk&' + str(numC)
options
the function usernameMaker
the function passwordMaker and the main part of the program that calls the function
the function usernameMaker and the main part of the program calling the program
the function passwordMaker
Answers
First, we have to understand what scope is. When variables are declared, they are only available in the code block they're declared in, unless they're global variables (this doesn't apply here).
strFirst is declared in usernameMaker and that is the only place it is available in.
The scope of a variable is the area where the variable can be accessed.
The scope of strFirst is (a) the function usernameMaker
From the program, we have the following function header
def usernameMaker (strFirst, strLast):
The above header implies that:
strFirst is a local variable of the function usernameMaker
This means that, the scope of strFirst is limited to the function usernameMaker
Hence, the correct option is (a)
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Why should your teacher purchase you a mobile device ?
Answers
it can help hjer bettrwr teach her stufdentd ts dshExplanation:
Select the correct answer
Which line of HTML code will result in a single paragraph that contains the line "Click here to visit our website with a hyperlink on the word "here"?
Click
visit our website.B.
Click to visit our website.
C.
Clickhere
to visit our website
D.
Click here to visit our website.
A.
href="http://www.example.com">here
to
Answers
The line of HTML code will result in a single paragraph that contains the line "Click here to visit our website with a hyperlink on the word "here" is
D. Click here to visit our website.How to create a hyperlink in htmlTo create a hyperlink in html we use the "a" anchor tag and the href attribute to specify the url we want to link to
The text that the user clicks on to follow the link is placed between the opening and closing a tags
In this case we want the text "here" to be the clickable link that takes the user to our website so we would use the following line of html code
<p>Click <a href="http://www.example.com">here</a> to visit our website.</p>
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who is he can anyone help me
Answers
A user acquired a new workstation and is attempting to open multiple large Excel files simultaneously. The user is not experiencing the expected performance when executing such large requests. Which of the following should a technician do FIRST? A. Increase the swap partition.B. Upgrade the CPU in the workstation. C. Upgrade the power supply in the workstation. D. Upgrade the RAM in the workstation.
Answers
A user acquired a new workstation and is attempting to open multiple large Excel files simultaneously but the user is not experiencing the expected performance when executing such large requests. The first action that the technician should take in such a case is to upgrade the RAM in the workstation.
RAM is the abbreviation for Random Access Memory, a type of computer memory that is vital for processing data quickly. A computer can store data temporarily in RAM. The type of RAM utilized in a PC or workstation is known as DRAM. When a user loads an application into RAM, it remains there until they exit the application. The computer transfers data into the RAM when the application is running. As a result, the RAM is utilized to access data, and it is significantly faster than reading data from a hard drive. It would significantly enhance the computer's performance when upgrading the RAM to a higher capacity.So, in conclusion, the technician should upgrade the RAM in the workstation first, to improve its performance.
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The microsoft office suite of programs primarily employs which type of menu structure?
Answers
The Microsoft office suite of programs primarily employs option a. Ribbon type of menu structure.
What is Microsoft Office suite mainly used for?Microsoft Office is known to be called a suite of applications that is said to have been set up so as to assist users with productivity as well as in fulfilling common tasks that is known to be done on a computer.
Therefore, based on the above, The Microsoft office suite of programs primarily employs option a. Ribbon type of menu structure for most of its applications or processes.
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The Microsoft Office suite of programs primarily employs which type of menu structure?
Select one:
a. Ribbon
b. Drop-down
c. Expanding
d. Flat-list
Why should data be not taken from the internet directly?
Please solve it..!!
Answers
Answer:
Explanation:
some files and websites are out of controllable. because of the hackers
Data obtained from the internet should not always be taken at face value and used directly in important decision-making processes or analysis.
What is internet?The Internet (or internet) is a global network of interconnected computer networks that communicate using the Internet protocol suite (TCP/IP).
For several reasons, data obtained from the internet should not always be taken at face value and used directly in important decision-making processes or analysis.
Accuracy: Internet data accuracy cannot always be verified, and there is no guarantee that the information is correct.Reliability: The dependability of internet data is also debatable.Relevance: Internet data may or may not be relevant to your specific research or project needs.Legal and ethical concerns: Using data obtained from the internet may raise legal and ethical concerns, particularly regarding intellectual property rights, copyright, and privacy.Thus, data should not be taken from the internet directly.
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write the complete sql command to count all the different short names of productsd
Answers
SQL, short for Structured Query Language, is a programming language used to manage and manipulate databases. One of its most common operations is retrieving data, which we accomplish using the `SELECT` command.
In the SQL command `SELECT COUNT(DISTINCT short_name) FROM products;`, we're applying two functions - `COUNT` and `DISTINCT`. `COUNT` tallies the number of entries, while `DISTINCT` ensures that each entry is unique, effectively removing duplicates. Therefore, `COUNT(DISTINCT short_name)` returns the number of unique 'short_name' entries in the table. 'products' represents the database table holding the product data, and 'short_name' is the specific column name containing product short names.
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What does a peripheral have to have in order for the operating system to control it?
A. driver
B. wizard
C. file extension
D. wireless network
Answers
Answer:
driver
Explanation:
hy does payments constitute such a large fraction of the FinTech industry? (b) Many FinTech firms have succeeded by providing financial services with superior user interfaces than the software provided by incumbents. Why has this strategy worked so well? (c) What factors would you consider when determining whether an area of FinTech is likely to tend towards uncompetitive market structures, such as monopoly or oligopoly?
Answers
(a) lengthy and complex processes for making payments (b) legacy systems and complex interfaces (c) regulatory requirements and substantial initial investment, can limit competition
(a) Payments constitute a significant portion of the FinTech industry due to several factors. First, traditional banking systems often involve lengthy and complex processes for making payments, leading to inefficiencies and higher costs. FinTech firms leverage technology and innovative solutions to streamline payment processes, providing faster, more secure, and convenient payment options to individuals and businesses. Additionally, the rise of e-commerce and digital transactions has increased the demand for digital payment solutions, creating a fertile ground for FinTech companies to cater to this growing market. The ability to offer competitive pricing, improved accessibility, and enhanced user experience has further fueled the growth of FinTech payment solutions.
(b) FinTech firms have succeeded by providing financial services with superior user interfaces compared to incumbents for several reasons. Firstly, traditional financial institutions often have legacy systems and complex interfaces that can be challenging for users to navigate. FinTech companies capitalize on this opportunity by designing user-friendly interfaces that are intuitive, visually appealing, and provide a seamless user experience. By prioritizing simplicity, convenience, and accessibility, FinTech firms attract and retain customers who value efficiency and ease of use. Moreover, FinTech companies leverage technological advancements such as mobile applications and digital platforms, allowing users to access financial services anytime, anywhere, further enhancing the user experience.
(c) Several factors contribute to the likelihood of an area of FinTech tending towards uncompetitive market structures such as monopoly or oligopoly. Firstly, high barriers to entry, including regulatory requirements and substantial initial investment, can limit competition, allowing a few dominant players to establish market control. Additionally, network effects play a significant role, where the value of a FinTech service increases as more users adopt it, creating a competitive advantage for early entrants and making it challenging for new players to gain traction. Moreover, data access and control can also contribute to market concentration, as companies with vast amounts of user data can leverage it to improve their services and create barriers for potential competitors. Lastly, the presence of strong brand recognition and customer loyalty towards established FinTech firms can further solidify their market position, making it difficult for new entrants to gain market share.
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