Write a program that reads an integer and displays, using asterisks a filled and hollow square, placed next to each other. for e
xample if side length is 5 the program should display like so.
This program prints a filled and hollow square.
Enter the length of a side: 5
***** *****
***** * *
***** * *
***** * *
***** *****
This program prints a filled and hollow square.
Enter the length of a side: 5
***** *****
***** * *
***** * *
***** * *
***** *****
1 answer:
Answer:
Here is the JAVA program.
import java.util.Scanner; //Scanner class to take input from user
public class HollowFilledSquare {
public static void main(String[] args) { //start of main() function body
Scanner sc= new Scanner(System.in); // Scanner class object
System.out.print("Enter an integer to display a filled and hollow square "); //prompts user to enter an integer
int n = sc.nextInt(); // reads integer input from the user
StringBuilder filled = new StringBuilder(n);
// creates objects filled and hollow of class StringBuilder
StringBuilder hollow = new StringBuilder(n);
for (int i = 1; i <= n; i++) { // outer loop for length of the square
for (int j = 1; j <= n; j++) { // inner loop for width of square
filled.append("*"); //displays asterisks
if (i == 1 || i == n || j == 1 || j == n) // condition to display stars
{hollow.append("*");}
else
{ hollow.append(" "); } } // to display empty spaces
System.out.println(filled + " " + hollow);
// places hollow and filled squares next to each other
filled. delete(0, filled.length());
//removes characters from 0 to the length of filled square
hollow. delete(0, hollow.length());
//removes characters from 0 to the length of hollow square } } }
Explanation:
The program first prompts the user to enter an integer. It uses outer loop for length of the square and inner loop for width of square in order to display the asterisks. append () function is used to display the sequence of asterisks. delete () function removes the asterisks from the sequence of asterisks. String Builder is a class used for to create a string of n characters. It basically works like String but this is used to create modifiable objects.
The screen shot of the code along with the output is attached.
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Answer:
I am writing a C program:
#include <stdio.h> //to use input output functions
void printIt(double annual_in){ //function printIt
if(annual_in >90000) //check if the income is greater than 90000
printf("Congratulations. Doing great!"); //print this message if income value is greater than 90000
else //if annual income is less than 90000
printf("You WILL make $50,000, if you keep going"); } //print this message if income value is less than 90000
int main() //start of main() funciton body
{ double income; //declares a double type variable income to hold annual income value
printf("Enter annual income: "); //prompts user to enter annual income
scanf("%lf",&income); //reads income value from user
printIt(income); } // calls printIt method by passing input income to that function
Explanation:
The program is well explained in the comments mentioned with each statement of the program. The flowchart is attached.
First flowchart flow1 has a separate main program flowchart which reads the income and calls printIt function. A second flowchart is of prinIt() method that checks the input income passed by main function and displays the corresponding messages and return.
The second flowchart flow2 is the simple flowchart that simply gives functional description of the C program as flowchart is not where giving function definitions is important. Instead of defining the function printIt separately for this C program, a high-level representation of functional aspects of this program is described in second flowchart while not getting into implementation details.
