C语言程序设计教程（第三版）课后习题5.6 （Java代码）

解题思路:





注意事项:





参考代码:

import java.util.Scanner;

public class C1008 {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

while (scanner.hasNext()) {

int score = scanner.nextInt();

if(score >= 90 && score <= 100){

System.out.println("A");

}else if(score >= 80 && score <= 89){

System.out.println("B");

}else if(score >= 70 && score <= 79){

System.out.println("C");

}else if(score >= 60 && score <= 69){

System.out.println("D");

}else if(score >= 0 && score <= 59){

System.out.println("E");

}else{

System.out.println("error!!");

}

}

scanner.close();

}

}