All categories

3 years ago

Answer the following questions:

Computers and Technology

1 answer:

victus00 [196]3 years ago

3 0

Answer:

The answer to the following questions can be given as:

Question: 1

value of foo is = 1020

Question: 2

Output of the code is = false

Question: 3

function add(a, b)

{

return a && b ? a + b : function (c) { return a + c; };

}

var a=add(2,5);

var x=add(2)(5);

print(a);

print(x);

output:

Question: 4

"goh angasal a m'i"

Question: 5

In this we check that if in the window a foo function exists. otherwise we set windows.foo to bar.

Question: 6

first alert shows the value "Hello World";

second alert shows value ReferenceError, In this bar not defined.

Question: 7

The value of foo.length is 2

Question: 8

The value of foo.x is undefined

Question: 9

Function print = "one", "three", "two" .

Question :10

It is difficult to define because doSomethingElse() function is not defined.

Explanation:

In question 1 the value of the foo variable is 1020 because we perform the string concat operation.

In question 2 Output of the code is false because float value keeps in binary and when we convert 0.1 or 0.2 to binary so it is not the same.

In question 3 the output of both functions is 7.

In question 4 the output is goh angasal a m'i because In this code we use the reverse() function, split() function and join() function. Reverse function reverses the value. split function splits the value and join function join all the value of the string in a line.

In question 5 we check the value.

In question 6, the first output is Hello World and second is ReferenceError.

In question 7, the value of foo.length is 2 because this foo array we insert only 2 values.

In question 8, the value of foo.x is undefined because in the variable we reset the value of foo all together, so foo.x value is undefined.

In the question 9 function print "one",

"three",

"two" because In the function first, we print the message that is "one" then we define a function in this function we print the value

"two" but before creating object we call the "three" so the print value is "one",

"three",

"two".

In question 10 function, the output of this function is undefined.

You might be interested in

Why do bats sleep upside down

seraphim [82]

Answer:

Bats cannot run so it would be almost impossible for them to take off from the ground. A major advantage to hanging upside down is that bats do not need to generate lift to begin flight. They just drop out of their bed, open their wings and off they go.

Explanation:

8 0

3 years ago

Blender is used by which video game team member?

prohojiy [21]

Answer:

The 2nd one

Explanation:

6 0

3 years ago

Choices.

Svet_ta [14]

Answer:

1. B

2. D

3. C

4. A

5. B

Explanation:

1. To check the integrity of your hard disk and fix various file system errors, the Windows utility which should be implemented is Check disk (Chkdsk). This utility is always used with the command line interface (CLI) with the command "chkdsk."

2. An event or action took place and it caused damage to data, hardware, software and processing capability of the computer. From the statement given, security risks are being described. Any event or action that is capable of causing a problem to a computer system is considered to be a security risk and should be prevented through the use of an appropriate utility software.

3. Virus is a software program that can infect, damage and disrupts the whole computer system.

4. To protect the whole computer system, the software utility which is needed is an Anti-virus.

5. To avoid losing valuable data to your computer, the most important thing to do is to regularly back-up your files.

7 0

2 years ago

This function returns the length of a string:

Anna71 [15]

Answer:

The strlen() function calculates the length of a given string.The strlen() function is defined in string.h header file.

Explanation:

It doesn’t count null character ‘0’. Syntax: int strlen(const char *str); Parameter: str: It represents the string variable whose length we have to find. Return: This function returns the length of string passed.

4 0

1 year ago

The intention of this problem is to analyze a user input word, and display the letter that it starts with (book → B).

yulyashka [42]

Answer:

Here is the C++ program:

#include<iostream> // to use input output functions

using namespace std; //to identify objects like cin cout

void StartChar(string str) { // function that takes a word string as parameter and returns the first letter of that word in capital

int i;

char c;

do //start of do while loop

{

for (int i = 0; i < str.length(); i++) { //iterates through each character of the word str

if(str.length()>25){ //checks if the length of input word is greater than 25

cout<<"limit exceeded"; } //displays this message if a word is more than 25 characters long

c = str.at(i); // returns the character at position i

if (! ( ( c >= 'a' && c <= 'z' ) || ( c >= 'A' && c <= 'Z' ) ) ) { //checks if the input word is contains characters other than the alphabet

cout<<str<<" is not a word!"<<endl; break;} //displays this message if user enters characters other than the alphabet

if (i == 0) { //check the first character of the input word

str[i]=toupper(str[i]); //converts the first character of the input word to uppercase

cout<<str<<" starts with letter "<<str[i]<<endl; } // prints the letter that the word starts with in capital letter

} cout<<"Enter a word: "; //prompts user to enter a word

cin>>str; //reads input word from user

}while(str!="#"); } //keeps prompting user to enter a word until the user enters #

int main() //start of the main() function body

{ string str; //declares a variable to hold a word

cout<<"Enter a word: "; //prompts user to enter a word

cin>>str; //reads input word from user

StartChar(str); } //calls function passing the word to it

Explanation:

The program prompts the user to enter a word and then calls StartChar(str) method by passing the word to the function.

The function StartChar() takes that word string as argument.

do while loop starts. The for loop inside do while loop iterates through each character of the word string.

First if condition checks if the length of the input word is greater than 25 using length() method which returns the length of the str. For example user inputs "aaaaaaaaaaaaaaaaaaaaaaaaaaa". Then the message limit exceeded is printed on the screen if this if condition evaluates to true.

second if condition checks if the user enters anything except the alphabet character to form a word. For example user $500. If this condition evaluates to true then the message $500 is not a word! is printed on the screen.

Third if condition checks if the first character of input word, convert that character to capital using toupper() method and prints the first letter of the str word in capital. For example if input word is "Computer" then this prints the message: Computer starts with the letter C in the output screen.

The program keeps prompting the user to enter the word until the user enters a hash # to end the program.

The output of the program is attached.

3 0

3 years ago