• Write a program that asks the user to enter the size of a triangle (an integer from 1 to 10)• Display the triangle by writing lines of asterisks• The first line will have one asterisk, the next two, and so on, with each line having one moreasterisk than the last line up to the number entered by the user.• On the following line, write one fewer asterisk and continue decreasing the number ofasterisks by 1 for each successive line until only one asterisk is displayed.(Hint: Use nested for loops; the outside loop controls the number of lines to write, and theinside loop controls the number of asterisks to display on a line.)• For example, if the user enters 3, the output would be:Input Data:• An integer between 1 to 10Set up an input validation loop to ensure the entered data is within range• As long as the entered data is not within range, the user is to be prompted repeatedly until theentered data is within range; at that point, then the valid input data is to be used to set up thepattern• Sample interaction:Enter an integer between 1 to 10 (message from the program)-9 (entered by the user)-9 is not between 1 to 10; enter an integer between 1 to 50 (message from the program)11 (entered by the user)11 is not between 1 to 10; enter an integer between 1 to 10 (message from the program)(additional incorrect input data and program's response)5 (entered by the user as valid input data) Processing:• Use nested loops to set up the pattern•Use a set of nested loops to develop the top part of the patternUse the second set of nested loops to develop the bottom part of the patternSample Output:• With 5 as the input data, here's the pattern:****Include:o Documentationo Program code: Solution complete and working correctlyo The exact output is included in the Java file as comments

Dear student, the answer is provided below.Java Code: import java.util.Scanner; public class Main { public static void main(String[] args) { int i, j, size; Scanner sc = new Scanner(System.in); // get user input System.out.print("Enter the size of the triangle (1-10): "); size = Integer.parseInt(sc.nextLine()); // input validation loop while(size<0 || size>10){ System.out.println(size+" is not between 1-10.\nEnter an integer between 1 to 10"); size = Integer.parseInt(sc.nextLine()); } // nested loop to print top part of the triangle for (i= 0; i<= size-1; i++) { for (j=0; j<=i; j++) { System.out.print("*"+ " "); } System.out.println(""); } // nested loop to print bottom part of the triangle for (i=size-1; i>=0; i--) { for(j=0; j <= i-1;j++) { System.out.print("*"+ " "); } System.out.println(""); } } } Output:Code Screenshot:

Engineering

Computer Science

Write a program that asks the user to enter the size of a triangle (an integer from 1 to 10) Display the triangle by writing lines of asterisks The first line will have one asterisk, the next two, and so on, with each line having one more asterisk than the last line up to the number entered by the user. On the following line, write one fewer asterisk and continue decreasing the number of asterisks by 1 for each successive line until only one asterisk is displayed. (Hint: Use nested for loops; the outside loop controls the number of lines to write, and the inside loop controls the number of asterisks to display on a line.) For example, if the user enters 3, the output would be:

Write a program that asks the user to enter the size of a triangle (an integer from 1 to 10) Display the triangle by writing lines of asterisks The first line will have one asterisk, the next two, and so on, with each line having one more asterisk than the last line up to the number entered by the user. On the following line, write one fewer asterisk and continue decreasing the number of asterisks by 1 for each successive line until only one asterisk is displayed. (Hint: Use nested for loops; the outside loop controls the number of lines to write, and the inside loop controls the number of asterisks to display on a line.) For example, if the user enters 3, the output would be:

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Variables and Constant

Constants and variables are widely used in mathematical equations and expressions. They are also commonly found in the domain of programming, where each language has its own way to differentiate between a constant and a variable. Since they have all sorts of applications, knowing their differences is a good place to start.

Question

• Write a program that asks the user to enter the size of a triangle (an integer from 1 to 10)
• Display the triangle by writing lines of asterisks
• The first line will have one asterisk, the next two, and so on, with each line having one more
asterisk than the last line up to the number entered by the user.
• On the following line, write one fewer asterisk and continue decreasing the number of
asterisks by 1 for each successive line until only one asterisk is displayed.
(Hint: Use nested for loops; the outside loop controls the number of lines to write, and the
inside loop controls the number of asterisks to display on a line.)
• For example, if the user enters 3, the output would be:
Input Data:
• An integer between 1 to 10
Set up an input validation loop to ensure the entered data is within range
• As long as the entered data is not within range, the user is to be prompted repeatedly until the
entered data is within range; at that point, then the valid input data is to be used to set up the
pattern
• Sample interaction:
Enter an integer between 1 to 10 (message from the program)
-9 (entered by the user)
-9 is not between 1 to 10; enter an integer between 1 to 50 (message from the program)
11 (entered by the user)
11 is not between 1 to 10; enter an integer between 1 to 10 (message from the program)
(additional incorrect input data and program's response)
5 (entered by the user as valid input data)

Processing:
• Use nested loops to set up the pattern
•
Use a set of nested loops to develop the top part of the pattern
Use the second set of nested loops to develop the bottom part of the pattern
Sample Output:
• With 5 as the input data, here's the pattern:
**
**
Include:
o Documentation
o Program code: Solution complete and working correctly
o The exact output is included in the Java file as comments

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