定义countA等5个整型变量用于技术不同分数段的组数

Question

利用for语句，每次循环利用对象输入一组程序，同时判断该成绩是否为90，100

Answer 1

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int countA = 0;
        int countB = 0;
        int countC = 0;
        int countD = 0;
        int countE = 0;
        for (int i = 1; i <= 10; i++) {
            System.out.println("请输入第" + i + "个学生的成绩：");
            int score = input.nextInt();
            if (score >= 90 && score <= 100) {
                countA++;
            } else if (score >= 80 && score <= 89) {
                countB++;
            } else if (score >= 70 && score <= 79) {
                countC++;
            } else if (score >= 60 && score <= 69) {
                countD++;
            } else {
                countE++;
            }
        }
        System.out.println("A等成绩人数：" + countA);
        System.out.println("B等成绩人数：" + countB);
        System.out.println("C等成绩人数：" + countC);
        System.out.println("D等成绩人数：" + countD);
        System.out.println("E等成绩人数：" + countE);
    }
}