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3 years ago

Write code that outputs variable numDays as follows. End with a newline. If input is 3, output is: Days: 3

Computers and Technology

1 answer:

kobusy [5.1K]3 years ago

8 0

Answer:

In C++:

#include<iostream>

using namespace std;

int main(){

int numDays;

cin>>numDays;

cout<<"Days: "<<numDays<<endl;

return 0;

}

Explanation:

This line declares numDays as integer

int numDays;

This line gets user input for numDays

cin>>numDays;

This line prints the required output and ends with a newline

cout<<"Days: "<<numDays<<endl;

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Assuming your computer only has one network card installed; explain how your virtual machine is able to share that card with you

adell [148]

Answer and Explanation:

Virtual machine have one imitated organize connector and there is one of a kind MAC address is allocated with it.

The system driver of the Virtual machine's performs all the task:

The system driver places physical connector in 'promiscuous' mode implies physical connector will acknowledge all system parcel paying little heed to MAC address,then virtual machine's driver channels its bundles and direct it to the virtual machine.

5 0

3 years ago

Imagine the user types in a complete sentence, but we want to read only the first word and place it in the String variable word.

Vladimir [108]

Answer:

import java.util.Scanner;

public class FirstWord {

public static void main(String[] args) {

//NOW YOU WANT TO COLLECT INPUTS FROM THE STUDENT OR USER

//IMPORT THE SCANNER CLASS FIRST outside your class

// THEN YOU CREATE AN OBJECT OF THE SCANNER CLASS

Scanner input = new Scanner(System.in);

//CREATE A VARIABLE TO HOLD THE USER INPUT

String text = input.nextLine();

//The variable holder will be used to store characters from the for loop

String holder="";

//Create a for loop that loops through the user's input

for(int i=0; i<text.length(); i++){

//As the loop increases, we get the character in the user's input and store them one by one in the variable holder

holder+=text.charAt(i);

if(text.charAt(i)==' '){

//If the loop encounters a space, it means a complete word has been gotten from the user's input

//Then the break below Breaks the loop, and the loop stops running

break;

}

System.out.println(holder);

}

Explanation:

text.length() returns the length of the sequence of characters present in length

text.charAt(a number) Returns the char value at the specified index. An index ranges from 0 to length() - 1. The first char value of the sequence is at index 0, the next at index 1, and so on, as for array indexing.

Create a for loop

How does a for loop work?

It collects a starting point, an end point and an increment respectively....all these are passed in as arguments into the for loop

For example, the code above starts from 0, calculates the number of characters in the user's input and sets it as the end point, the loop runs from zero to the length of the text of the user...

Note: i++ in the loop is the increment, it means the loop increases by 1

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3 years ago

In order to consolidate your theoretical knowledge into technique and skills with practical and applicational value, you will us

Arisa [49]

Answer:

Check the explanation

Explanation:

Lasso: R example

To run Lasso Regression you can re-use the glmnet() function, but with the alpha parameter set to 1.

# Perform 10-fold cross-validation to select lambda --------------------------- lambdas_to_try <- 10^seq(-3, 5, length.out = 100) # Setting alpha = 1 implements lasso regression lasso_cv <- cv.glmnet(X, y, alpha = 1, lambda = lambdas_to_try, standardize = TRUE, nfolds = 10) # Plot cross-validation results plot(lasso_cv)

Best cross-validated lambda lambda_cv <- lasso_cv$lambda.min # Fit final model, get its sum of squared residuals and multiple R-squared model_cv <- glmnet(X, y, alpha = 1, lambda = lambda_cv, standardize = TRUE) y_hat_cv <- predict(model_cv, X) ssr_cv <- t(y - y_hat_cv) %*% (y - y_hat_cv) rsq_lasso_cv <- cor(y, y_hat_cv)^2 # See how increasing lambda shrinks the coefficients -------------------------- # Each line shows coefficients for one variables, for different lambdas. # The higher the lambda, the more the coefficients are shrinked towards zero. res <- glmnet(X, y, alpha = 1, lambda = lambdas_to_try, standardize = FALSE) plot(res, xvar = "lambda") legend("bottomright", lwd = 1, col = 1:6, legend = colnames(X), cex = .7)

Kindly check the Image below.

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3 years ago

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yKpoI14uk [10]

Answer: Operating system

Explanation:

The operating system is the type of software that are responsible for manage the processor time and also the memory allocation in the system. The operating system mainly deals with the processor time by scheduling the processor work done in the system.

The OS mainly control the system and then schedule the execution of various types of function by the central processing system (CPU). It also control the memory allocation in the system.

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3 years ago

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Nutka1998 [239]

Answer:

Database Management System ppt DBMS

I don't know if that is right. Sorry if it's not.

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3 years ago

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