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kykrilka [37]
2 years ago
8

Assume the availability of a function called printStars. The function receives an integer value as an argument. If the argument

is positive, the function prints (to standard output) the given number of asterisks. Thus, if printStars(8) is called, ******** (8 asterisks) will be printed.
Assume further that the variable starCount has been declared and initialized to contain a positive integer value.

Write some code that prints starCount asterisks to standard output by:

first printing a single asterisk and no other characters then calls printStars to print the remaining asterisks.

Hint: Make sure to use the "end" option for print characters without the default newline, e.g. print("hello", end="")
Computers and Technology
1 answer:
In-s [12.5K]2 years ago
4 0

Answer:

a i just did it

Explanation:

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Write a program that uses the Purchase class in 5.13. Set the prices to the following: Oranges: 10 for $2.99 Eggs: 12 for $1.69
Xelga [282]

Answer:

Explanation:

The following program is written in Java. Using the program code from Purchase class in 5.13 I created each one of the fruit objects. Then I set the price for each object using the setPrice method. Then I set the number of each fruit that I intended on buying with the setNumberBought method. Finally, I called each objects getTotalCost method to get the final price of each object which was all added to the totalCost instance variable. This instance variable was printed as the total cost of the bill at the end of the program. My code HIGHLIGHTED BELOW

//Entire code is in text file attached below.

//MY CODE HERE

       DecimalFormat df = new DecimalFormat("0.00");

       oranges.setPrice(10, 2.99);

       oranges.setNumberBought(2*12);

       eggs.setPrice(12, 1.69);

       eggs.setNumberBought(2*12);

       apples.setPrice(3, 1);

       apples.setNumberBought(20);

       watermelons.setPrice(1, 4.39);

       watermelons.setNumberBought(2);

       bagels.setPrice(6, 3.50);

       bagels.setNumberBought(12);

       totalCost = oranges.getTotalCost() + eggs.getTotalCost() + apples.getTotalCost() + watermelons.getTotalCost() + bagels.getTotalCost();

       System.out.println("Total Cost: $" + df.format(totalCost));

   }

}

5 0
2 years ago
Write a program that reads an integer and displays, using asterisks a filled and hollow square, placed next to each other. for e
Keith_Richards [23]

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.

4 0
2 years ago
Zander is beginning to take college courses to prepare for a career in computer science, which is the study of using logic to cr
scoundrel [369]

The answer is (A. career definition and career requirements  )


7 0
2 years ago
Give a proof for each statement.
Marrrta [24]

Answer:

  • If a group of 9 kids have won a total of 100 trophies, then at least one of the 9 kids has won at least 12 trophies.
  • If a person buys at least 400 cups of coffee in a year, then there is at least one day in which the person has bought at least two cups of coffee.
  • The average of three real numbers is greater than or equal to at least one of the numbers.

Explanation:

1)

Suppose that  each kid has less than 12 trophies

Total trophies = 100

Maximum trophies won by one kid = 11

total kids = 9

total number of trophies = 9 * 11 = 99 which contradicts the fact the total number of trophies are 100

2)

Suppose that  person has less than 2 cups of coffee a day

Total cups of coffee = 400

he has bought at least one cup of coffee each day

which means

total number of cups of coffee = 1* 366 = 366 which contradicts the fact the person buys at least 400 cups of coffee in a year

3)

Average of three number = (a+ b+ c)/3

suppose that there are real numbers a, b, and c such  that all three numbers are less than the average of the three numbers.

Let m be the average (a+b+c )/3 = m. Then our assumption states that (a < m) and  (b < m) and (c < m). By adding all the inequalities we get a + b + c < 3m. But m is  defined to be (a+b+c) /3  , so a + b + c = 3m.  But now we have that 3m = a + b + c < 3m. So 3m < 3m which is an obvious  contradiction. Thus our claim is true

7 0
2 years ago
Which of the following is considered technology?
nevsk [136]
A. computer
computer because computer is technology and pencil is not and spoon.
8 0
2 years ago
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