CODEWITHSUNDEEP
java
dufilston
dufilston

Reputation: 3

How to enter a character to stop a loop

I need to write code that calculates the average of inputs (int) a user has entered. However, the problem is that I also have to allow the user to enter as many inputs as they want and stop when they enter a character(letter).

I can do this problem if there was a given limit I could use, but because the limit could be anything I am having trouble writing a formula that could calculate the average since the number of inputs could be different between any user.

import java.util.Scanner;

public class AvgGrades {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.println("Enter as many student grades as you like. Enter a character to stop.");
        float total=0, avg;
        int grades = input.nextInt();

        for (int i = 0; i < grades.length; i++) {
            grades[i] = input.nextInt();
            total = total + grades[i];
        }
        input.close();
        avg = total/grades.length;
        System.out.println("Average student grade is "+avg);





    }

    }

The inputs are: 30.0 45.6 23.8 78.75 90 92 67.5 10.65 88 c The output should be: Enter as many student grades as you like. Enter a character to stop. Average student grade is: 58.477777777777774

My output is that the code just does not run.

Upvotes: 0

Views: 290

Answers (1)

user10762593
user10762593

Reputation:

Here's a sketch of the process. I'll leave for you the details of turning that into a complete program.

float total = 0;
int count = 0;
while (scanner.hasNextFloat()) {
    float num = scanner.nextFloat();
    total += num;
    count++;
}
float average = total / count;

You don't need to store the individual numbers.

Upvotes: 1

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