import java.util.Scanner; public class MovieRatting { public static void main(St
ID: 3726869 • Letter: I
Question
import java.util.Scanner;
public class MovieRatting {
public static void main(String[] args) {
// TODO Auto-generated method stub
int numberOfMovies=0;
int rating=0;
int ratingSum=0;
boolean flag=false;
while(rating>=0)
{
System.out.println("Enter Movie Ratings, enter negative number to quit: ");
Scanner sc=new Scanner(System.in);
rating=sc.nextInt();
if(rating<0)
{
break;
}
else if(rating>4)
{
do {
System.out.println("please enter the rating in the range of 0-4");
rating=sc.nextInt();
}while(rating>4);
if(rating<0)
{
flag=true;
break;
}
else
{
ratingSum=ratingSum+rating;
numberOfMovies++;
}
}
else
{
numberOfMovies++;
ratingSum=ratingSum+rating;
}
}
if(numberOfMovies==0)
{
System.out.println("Avg Rating of the movies is: "+numberOfMovies);
}
else
{
double avgRating=ratingSum/numberOfMovies;
System.out.println("Avg rating of the movies is "+avgRating);
}
}
}
The program is already written. Can somebody write the Comments?
Explanation / Answer
Please find my answer.
import java.util.Scanner;
public class MovieRatting {
public static void main(String[] args) {
// TODO Auto-generated method stub
int numberOfMovies=0;
int rating=0;
int ratingSum=0;
boolean flag=false;
// reading till user input rating greater than or equal to ZERO
while(rating>=0)
{
// readign rating
System.out.println("Enter Movie Ratings, enter negative number to quit: ");
Scanner sc=new Scanner(System.in);
rating=sc.nextInt();
// if rating is negative, stop the program
if(rating<0)
{
break;
}
// if rating is greater than 4
else if(rating>4)
{
// keep prompting user to enter rating until it is greater than 4
do {
System.out.println("please enter the rating in the range of 0-4");
rating=sc.nextInt();
}while(rating>4);
// if rating entered is less than 0 then make flag true so that we can stop program
// after checking flag value
if(rating<0)
{
flag=true;
break;
}
// if user entered ranting >=0 && rating <= 4
else
{
// add current rating value in the total
ratingSum=ratingSum+rating;
numberOfMovies++; // increasing number of movie
}
}
else
{
// increasing number of movie
numberOfMovies++;
// add current rating value in the total
ratingSum=ratingSum+rating;
}
}
// if number of movie is zero then print 0 as average rating
if(numberOfMovies==0)
{
System.out.println("Avg Rating of the movies is: "+numberOfMovies);
}
else
{
// calculating the average rating
double avgRating=ratingSum/numberOfMovies;
System.out.println("Avg rating of the movies is "+avgRating);
}
}
}
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