Question

使用此代码（cpu 100％）后，我的Eclipse崩溃了，任何人都可以确认该代码是否有效。我不知道是否因为代码错误而崩溃

这是下面的代码

import java.util.Scanner;


public class ClassStudent {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        int A=0;
        int F=0;
        int total=0;
        int counter=0;
        double Av12;
        int pass=0;
        int fail=0;
        int grade;

        System.out.println("enter grades or enter -1 to exit  :  ");
        grade=input.nextInt();

        while(grade>=0) {

            if (grade>90 && grade<=100) {
                A++;
            pass++;
            }

            if (grade>0 && grade<=59) {
                F++;
            fail++;
            }


            total=total+grade;
            counter++;

        }

        System.out.println("the total is "+total);
        Av12=(double)total/counter;
        System.out.printf("the averge is %.2f %n ",Av12);

        System.out.printf("num of A is %d %n and F is %d%n and fail is %d%n and pass is %d%n ",A,F,fail,pass);

    }

}

Answer 1

我不是Java人士，但这应该可以。我可以提供这样的解决方案。

import java.util.Scanner;


public class ClassStudent {

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        int A=0;
        int F=0;
        int total=0;
        int counter=0;
        double Av12;
        int pass=0;
        int fail=0;
        int grade;



        do {

    System.out.println("enter grades or enter -1 to exit  :  ");
       grade=input.nextInt();
            if (grade>90 && grade<=100) {
                A++;
            pass++;
            }

            if (grade>0 && grade<=59) {
                F++;
            fail++;
            }


            total=total+grade;
            counter++;

        } while(grade>=0);

        System.out.println("the total is "+total);
        Av12=(double)total/counter;
        System.out.printf("the averge is %.2f %n ",Av12);

        System.out.printf("num of A is %d %n and F is %d%n and fail is %d%n and pass is %d%n ",A,F,fail,pass);

    }

}

Answer 2

它是由于无限循环蚀显示了该错误。我假设您要检查输入等级是否为有效输入。假设输入等级应在0到100之间，将while ( grade >= 0 )更改为if ( grade >= 0 && grade <= 100 )。

使用此代码（cpu 100％）后我的eclipse崩溃，任何人都可以确认该代码是否有效

2 个答案: