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2 years ago

What is software engineering? What are the objectives of software engineering?

Computers and Technology

1 answer:

Mashutka [201]2 years ago

7 0

Answer:

The basic objective of software engineering is to develop methods and procedures for software development that can scale up for large systems and that can be used consistently to produce high-quality software at low cost and with a small cycle of time.

Explanation:

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White raven [17]

Answer:

no idea sorry...

Explanation:

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2 years ago

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8.11 LAB: Count characters - functions Write a program whose input is a character and a string, and whose output indicates the n

Shkiper50 [21]

Answer:

#include<iostream>

using namespace std;

int CountCharacters(char userChar, const string inputstr){

int k = 0;

int iter = 0;

for (iter = 0; iter < inputstr.size(); iter++){

if (inputstr[iter] == userChar){

++k; }}

return k;}

int main(){

string str;

char userChar[1];

cout<<"Char: "; cin>>userChar;

cin.ignore();

cout<<"String: "; getline(cin, str);

cout<<CountCharacters(userChar[0],str);

return 0;}

Explanation:

Written in C++:

The function is defined here:

int CountCharacters(char userChar, const string inputstr){

This initializes a count variable k to 0

int k = 0;

This initializes an iterating variable iter to 0

int iter = 0;

This iterates through the characters of the string being passed to the function

for (iter = 0; iter < inputstr.size(); iter++){

This checks for matching characters

if (inputstr[iter] == userChar){

If found, k is incremented by 1

++k; }}

This returns the total count

return k;}

The main begins here

int main(){

This declares a string variable

string str;

This declares a character variable

char userChar[1];

This gets input for the character variable

cout<<"Char: "; cin>>userChar;

This lets the user get another input

cin.ignore();

This gets input for the string variable

cout<<"String: "; getline(cin, str);

This calls the function and return the count of character in the string

cout<<CountCharacters(userChar[0],str);

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2 years ago

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Explanation:

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3 years ago

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Import java.awt.GridLayout;

Vikki [24]

Answer:

public class ConversionCalculator extends JFrame {

private JLabel inch_Label, meter_Label, cm_Label, yard_Label;

private JButton clear, calculate, exit;

private JTextField inch_tf, cm_tf, meters_tf, yards_tf;

public ConversionCalculator()

{

exitButtonHandler exitB;

clearButtonHandler clearB;

calcButtonHandler calcB;

setTitle("Conversion Calculator");

setSize(600,200);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//The first layout we use will be 1 row with three columns

setLayout(new GridLayout(1,3));

//initialize all the components

inch_Label = new JLabel("Inches");

meter_Label = new JLabel("Meters");

cm_Label = new JLabel("Centimeters");

yard_Label = new JLabel("Yards");

clear = new JButton("Clear");

calculate = new JButton("Calculate");

exit = new JButton("Exit");

inch_tf = new JTextField("0.00");

cm_tf = new JTextField("0.00");

meters_tf = new JTextField("0.00");

yards_tf = new JTextField("0.00");

JPanel panel1 = new JPanel();

panel1.setLayout(new GridLayout(2,2));

JPanel panel2 = new JPanel();

panel2.setLayout(new GridLayout(2,2));

JPanel panel3 = new JPanel();

panel3.setLayout(new GridLayout(3,1));

panel1.add(cm_Label);

panel1.add(cm_tf);

panel1.add(meter_Label);

panel1.add(meters_tf);

panel2.add(inch_Label);

panel2.add(inch_tf);

panel2.add(yard_Label);

panel2.add(yards_tf);

panel3.add(clear);

panel3.add(calculate);

panel3.add(exit);

add(panel1);

add(panel2);

add(panel3);

exitB = new exitButtonHandler();

exit.addActionListener(exitB);

clearB = new clearButtonHandler();

clear.addActionListener(clearB);

calcB = new calcButtonHandler();

calculate.addActionListener(calcB);

setVisible(true);

}

//public static void main(String[] args)

// {

// new ConversionCalculator();

//}

private class exitButtonHandler implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

//exits program

System.exit(0);

}

private class clearButtonHandler implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

//clear button sets all text fields to 0

inch_tf.setText("0.00");

meters_tf.setText("0.00");

yards_tf.setText("0.00");

cm_tf.setText("0.00");

}

private class calcButtonHandler implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

double inches, yards, meters, cms;

DecimalFormat df = new DecimalFormat("0.00");

//parse strings in textbox into doubles

inches = Double.parseDouble(inch_tf.getText());

yards = Double.parseDouble(yards_tf.getText());

meters = Double.parseDouble(meters_tf.getText());

cms = Double.parseDouble(cm_tf.getText());

//we check which value has been tampered with and base our conversion off this

//because of this it is important that the user clears, or else it will do inch conversion

if(inches != 0.00)

{

cms = inches * 2.54;

meters = cms / 100;

yards = inches / 36;

cm_tf.setText(df.format(cms));

meters_tf.setText(df.format(meters));

yards_tf.setText(df.format(yards));

}

else if(yards != 0.00)

{

inches = yards / 36;

cms = inches * 2.54;

meters = cms / 100;

cm_tf.setText(df.format(cms));

meters_tf.setText(df.format(meters));

inch_tf.setText(df.format(inches));

}

else if(meters != 0.00)

{

cms = meters * 100;

inches = cms / 2.54;

yards = inches / 36;

cm_tf.setText(df.format(cms));

inch_tf.setText(df.format(inches));

yards_tf.setText(df.format(yards));

}

else if(cms != 0.00)

{

inches = cms / 2.54;

yards = inches / 36;

meters = cms / 100;

meters_tf.setText(df.format(meters));

inch_tf.setText(df.format(inches));

yards_tf.setText(df.format(yards));

}

Explanation:

Inside the action performed method, pass the strings in text box.
check if the value has been modified then do the relevant conversions inside the conditional statement.
When the user clears, it will not do to the inch conversion.

8 0

3 years ago

Write a function that receives two numbers, m and n and calculates and displays the sum of the integers from m to n. For example

Evgesh-ka [11]

Answer:

The program to this question as follows:

Program:

//header file

#include <stdio.h> //defining header file

void inc(int m,int n) //defining method inc

{

int sum, i; //declaring variable

sum=m; //holding value of m variable

for(i=++m;i<=n;i++) //loop for calculate number between given range

{

sum=sum+i; //adding value

}

printf("sum of the integer is : %d",sum);//print value

}

int main() //defining method

{

int m,n; //defining integer variable

printf("Enter m value: "); //message

scanf("%d",&m); //input value by user in variable

printf("Enter n value: "); //message

scanf("%d",&n);//input value by user in variable

inc(m,n); //calling method

return 0;

}

Output:

Enter m value: 3

Enter n value: 7

sum of the integer is :25

Explanation:

In the above code, an "inc" function is declared, that accepts integer parameters that are "m and n", inside the method two integer variable "sum and i" is declared, which is used in the loop.

The loop uses the user parameter to count value and uses the sum variable to calculate there sum.
In the main method, two integer variable n and m are declared, which take value from the user end, and at the last, we call the inc method, that prints sum value.

7 0

2 years ago