Question

.Need code for my java class !!

Write a simple java program that uses loops. You may use ‘WHILE’ or ‘FOR’ or ‘DO-WHILE’ – you decide. The program should use a loop to compute the semester average for up to 5 students. In the loop the user will ask for a student name and their 3 test scores and add them up and divide the total by 3 giving the semester average. You will print out the student name and semester average for each student you process

2. Write a java program that makes use of the ‘DO WHILE ’ loop. The program asks a user to enter information about several of their friends. The information is their last name, the state they live in, their age, and their expected graduation year. After you enter one friend, write out each individually. You must use JOptionPane to input the 4 fields, and to output the 4 fields. Refer to the textbook Code Listing 4-6 to see how to use ‘char repeat’ to terminate the do while loop.

3. Write a java program that makes use of the ‘FOR’ loop. Assume that a user has a 5 room apartment and is going to put down new floor covering in all 5 rooms. The program must ask the user to enter the length of each room in feet and to enter the width of each room in feet [you may use either Scanner or JOptionPane]. Assume that the flooring they plan to use is $10.00 a square yard, compute how much it is going to cost to cover each room. At the end print out how much it will cost to cover all 5 rooms in the apartment. Print out on separate lines: The number of square feet per room, The number of square yards per room, The cost to cover each room. The number of square feet in the apartment, The number of square yards in the apartment, The cost to cover the 5 room apartment.

4 Assume that you own a small office-building complex containing several different buildings. Write a java program that uses the ‘WHILE’ loop which does the following. It should ask the user to enter the total number of buildings in the complex. Then, set up a loop so that you can process each building one at a time within the loop. The loop should ask the user for the number of offices in a given building, and the number of them that are rented. The program must be certain to keep track of the number of offices in a building and the number that are rented, because after the loop quits, the program must print out: the total number of offices that the entire complex has the total number of offices that are rented the total number of offices that are empty the percentage of offices rented.

Answer 1

Hi There!!

As per Chegg policy, we can answer only one question at a time. So, I will be answering your first program in Java.

Write a simple java program that uses loops. You may use ‘WHILE’ or ‘FOR’ or ‘DO-WHILE’ – you decide. The program should use a loop to compute the semester average for up to 5 students. In the loop the user will ask for a student name and their 3 test scores and add them up and divide the total by 3 giving the semester average. You will print out the student name and semester average for each student you process

Few points on the program:

1. The program uses all the 3 loops- for, while and do while!!

2. The program checks if the number of students value is <=5 (compute the semester average for up to 5 students.), else it will prompt the user again to enter the value <=5.

3. The program is kept as simple as possible. No arrays are used. The student name and 3 semester scores will be taken. Average is calculated. The student name and semester average is printed as soon as they are entered.

The expected output for the program:

If students number=2,

If students number >5,

The code in Java:

import java.util.Scanner;

public class Main {
public static void main(String[] args)
{
int semester=3, students, counter=0;   
float score, sumofScore=0, averageScore = 0;
   String student_name="";
  
Scanner scan = new Scanner(System.in);
//For how many students the average that has to be calculated
System.out.print("Enter the number of students for which score should be computed : ");
//Get the number
students = scan.nextInt();
  
//If the student numbers is greater than 5, it prompts user to enter <=5
while(students>5)
{
System.out.print("Please enter the number of students upto 5 : ");
students = scan.nextInt();
}
//for all the numbers of students, execute this loop
           do
{
//get the name of the student
System.out.print("Enter the name of the student : ");
student_name=scan.next();
//initialise for every new average to zero, else it will be added with previous average.
sumofScore=0;

//get the score for all the three semesters using the loop
for(int i=1;i<=semester;i++)   {
System.out.print("Enter the test "+i+" score : ");
score = scan.nextInt();
//calculate the sum of the semester scores.
sumofScore += score;
}
//calculate the average of the three semesters.
averageScore = sumofScore/semester;
//Print the name and the average of that student.
System.out.println("The Average score of "+ student_name+" is : "+averageScore);
counter++;
} while(counter<students);
}
  
}

Thanks!!Cheers!!Happy Chegging!!