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3 years ago

Can someone tell me how this is a SyntaxError! (Python3)

Computers and Technology

1 answer:

Basile [38]3 years ago

6 0

Answer:

The expression on line 9 required 2 brackets

Explanation:

Given

The attached code

Required

Why syntax error.

The error points to line 10, but the error is actually from line 9

To get an integer input, the syntax is:

variable-name = int(input("Prompt"))

From the attached code, the line 9 is:

amount = int(input("Enter cheese order weight: ")

By comparing the syntax to the actual code on line 9, only 1 of the brackets is closed.

This, in Python 3 is a sytax error

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Answer:

The code is given in the explanation section

Explanation:

//Class Airconditioner

public class AirConditioner {

private boolean turnOnOff;

//The Constructor

public AirConditioner(boolean turnOnOff) {

this.turnOnOff = turnOnOff;

}

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public void turn_on(){

this.turnOnOff = true;

}

//method turn_off

public void turn_off( ){

this.turnOnOff = false;

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// A new class to test the airconditional class

class AircondionTest{

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//Using the reference varible to call method turn_on

office_a_c.turn_on();

}

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3 years ago

If I have an Animal superclass with a Mammal subclass, both concrete and both having a method called eat() with identical signat

Katarina [22]

Answer:

Explanation:

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So in the case of Animal superclass and Mammal subclass, both having a method called eat() with identical signatures and return types, depending on which reference, the correct method eat() will be called dynamically upon execution.

For example, if we have the following;

================================

Mammal mammal = new Animal();

mammal.eat()

================================

The eat() method that will be called is the one in the Mammal subclass.

However, if we have;

================================

Animal animal = new Animal();

animal.eat()

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The eat() method of the Animal superclass will be called.

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3 years ago

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The potential risks that is linked with the use of internet as a resource point is known to be copyright infringement.

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2 years ago

Create an Automobile class for a dealership. Include fields for an ID number, make, model, color, year, vin number, miles per ga

aliya0001 [1]

Answer:

public class TestAutomobiles {

public static void main(String args[]) {

Automobile obj = new Automobile(1, "Wolkswagen", "Golf", 2007, "GR1GR", 20, 120, "Grey");

System.out.println("Initial Speed: " + obj.getSpeed());

System.out.println("Current Speed with acceleration 100: " + obj.accelerate(100));

System.out.println("Current Speed after using brake : " + obj.brake());

}

class Automobile {

private int idNumber, year, milesPerGallon, speed = 0;

private String model, vinNumber, make, color;

public void setIdNumber(int idNumber){

if (idNumber >= 0 && idNumber <= 9999)

this.idNumber = idNumber;

else this.idNumber = 0;

}

public void setModel(String model){

this.model = model;

}

public void setYear(int year){

if (year >= 2000 && year <= 2017)

this.idNumber = idNumber;

else this.year = 0;

}

public void setVinNumber(String vinNumber){

this.vinNumber = vinNumber;

}

public void setMilesPerGalon(int milesPerGallon){

if (milesPerGallon >= 10 && year <= 60)

this.milesPerGallon = milesPerGallon;

else this.milesPerGallon = 0;

}

public void setSpeed(int speed){

this.speed = speed;

}

public void setMake(String make){

this.make = make;

}

public void setColor(String color){

this.color = color;

}

public int getIdNumber(){return idNumber;}

public String getModel(){return model;}

public int getYear(){return year;}

public String getVinNumber(){return vinNumber;}

public int getMilesPerGallon(){return milesPerGallon;}

public int getSpeed(){return speed;}

public String getMake(){return make;}

public String getColor(){return color;}

public int accelerate() {

setSpeed(speed + 5);

return speed;

}

public int brake() {

setSpeed(speed - 5);

return speed;

}

public int accelerate(int s) {

setSpeed(speed + s);

return speed;

}

public int brake(int s) {

setSpeed(speed - s);

return speed;

}

public Automobile(int idNumber, String make, String model, int year, String vinNumber, int milesPerGallon, int speed, String color){

setIdNumber(idNumber);

setModel(model);

setYear(year);

setVinNumber(vinNumber);

setMilesPerGalon(milesPerGallon);

setSpeed(speed);

setMake(make);

setColor(color);

}

Explanation:

Required variables are declared as private members.

Their setters and getter are created.

Two accelearate and two break methods are created.

One constructor taking all variables as parameter is created.

In the main, I tested a few functions to check if they work properly.

4 0

3 years ago