Question

In: Computer Science

10. We are trying to assign the value of a variable named “FirstNumber” to a variable...

10. We are trying to assign the value of a variable named “FirstNumber” to a variable named “SecondNumber”. They are declared as shown below. Which of the following statements is correct?

double FirstNumber = 25.5;

int SecondNumber;

Group of answer choices

c. SecondNumber = int.Parse (FirstNumber);

b. SecondNumber = (double) FirstNumber;

d. SecondNumber = double.Parse (FirstNumber);

a. SecondNumber = (int)FirstNumber;

Expert Solution

From given options option a is correct that is:

SecondNumber = (int)FirstNumber;

Now let's discuss why option a is correct.

In the given question we have to assign a value of a Double datatype variable FirstNumber to an Integer datatype variable SecondNumber. So Typecasting will be used to do so because both variables are of different data types. Let's discuss what is typecasting.

Typecasting:

Typecasting is nothing but a method of assigning the value of a primitive data type(i.e integer, float, char, double) to another datatype. Typecasting can be done by two methods:

1. Implicit Typecasting: In implicit typecasting one datatype is automatically converted to another data type. Usually implicit typecasting is done from lower value datatype to higher value datatype

2. Explicit Typecasting: In explicit typecasting we have to inform the compiler that we are doing this typecasting by passing the name of datatype in () brackets while assigning value. This typecast is mainly used to typecast larger value datatype to lower value datatype.

In the given question we have two datatypes int and double

Double is a higher value data type so it can not be implicitly typecasted to int

This is the reason we have passed (int) while explicitly typecasting FirstNumber to SeconNumber.

I am attaching screenshots of my compiler which is showing correct syntax along with the output we are getting after running the program in java

venereology answered 4 weeks ago

Python HW with Jupyter Notebook Declare a variable named DATA as a dictionary object. Assign the...

Python HW with Jupyter Notebook Declare a variable named DATA as a dictionary object. Assign the set of key/value pairs shown below. Create a function named iter_dict_funky_sum() that takes one dictionary argument. Declare a running total integer variable. Extract the key/value pairs from DATA simultaneously in a loop. Do this with just one for loop and no additional forms of looping. Assign and append the product of the value minus the key to the running total variable. Return the funky...

. Assume that a double variable named alpha contains the value of an angle in radians....

. Assume that a double variable named alpha contains the value of an angle in radians. Compose a C++ statement that will display the sine of the angle so that it occupies 12 positions on the screen and displays 3 digits after the decimal point.

What value do we assign to shares issued in a bond conversion? Group of answer choices...

What value do we assign to shares issued in a bond conversion? Group of answer choices Book value of shares. Market value of bonds. Market value of shares. Book value of bonds.

You will overload a function named printArray. The function will assign values to each element and...

You will overload a function named printArray. The function will assign values to each element and print out a single dimension array of integers and an array of characters. The main body of the program will call each function. In C++

in C++ You will overload a function named printArray. The function will assign values to each...

in C++ You will overload a function named printArray. The function will assign values to each element and print out a single dimension array of integers and an array of characters. The main body of the program will call each function. (6 points) Using the player switch portion of the tic tac toe game, create a function that does the switch. This is a practice in applying local variables, parameters, and global variables. (4 points)

Given a String variable named sentence that has been initialized, write an expression whose value is...

Given a String variable named sentence that has been initialized, write an expression whose value is the the very last character in the String referred to by sentence. write it in python

Java Implement a class MyInteger that contains: • An int data field/instance variable named value that...

Java Implement a class MyInteger that contains: • An int data field/instance variable named value that stores the int value represented by this object. • A constructor that creates a MyInteger object for a default int value. What default value did you choose? What other values did you consider? Why did you make this choice? • A constructor that creates a MyInteger object for a specified int value. • A getter method, valueOf(), that returns value. • A setter method,...

C# Programming using Windows Form 1. Define a variable named isTrue that stores a value of...

C# Programming using Windows Form 1. Define a variable named isTrue that stores a value of whether something is true or false. Set this variable to the negative. Output this variable to the txtIsTrue textbox. 2. Define a variable named favoriteGame that could store the name of a game. Set this variable's value to your favorite game. Output this variable to the txtFavoriteGame textbox. 3.. Define a variable named pi that can store real numbers. initialize it to a value...

(in java) Find the maximum value and minimum value in milesTracker. Assign the maximum value to...

(in java) Find the maximum value and minimum value in milesTracker. Assign the maximum value to maxMiles, and the minimum value to minMiles. Sample output for the given program: Min miles: -10 Max miles: 40 given code below (please bold the solution, thank you!) import java.util.Scanner; public class ArraysKeyValue { public static void main (String [] args) { Scanner scnr = new Scanner(System.in); final int NUM_ROWS = 2; final int NUM_COLS = 2; int [][] milesTracker = new int[NUM_ROWS][NUM_COLS]; int...

Find the maximum value and minimum value in milesTracker. Assign the maximum value to maxMiles, and...

Find the maximum value and minimum value in milesTracker. Assign the maximum value to maxMiles, and the minimum value to minMiles. Sample output for the given program: Min miles: -10 Max miles: 40 import java.util.Scanner; public class ArraysKeyValue { public static void main (String [] args) { Scanner scnr = new Scanner(System.in); final int NUM_ROWS = 2; final int NUM_COLS = 2; int [][] milesTracker = new int[NUM_ROWS][NUM_COLS]; int i; int j; int maxMiles; // Assign with first element in...