给出一百分制成绩，要求输出成绩等级
给出一百分制成绩，要求输出成绩等级 'A'，'B','C','D','E'。90分以上为'A'，80～89分为'B'，70～79分为'C'，60～69分为’D',60分以下为'E
问题补充：用C,不要用C++
这是我编的的,哪错了
#include<stdio.h>
void main()
{
int a,s;
char ch;
scanf("%c",&ch);
if('s'==100) a=9;
else a=s/10;
switch(a)
{
case 0:print('E\n');break;
case 1:print('E\n');break;
case 2:print('E\n');break;
case 3:print('E\n');break;
case 4:print('E\n');break;
case 5:print('E\n');break;
case 6:print('D\n');break;
case 7:print('C\n');break;
case 8:print('B\n');break;
case 9:print('A\n');break;
default:print("error\n");
}}
90分以上为优
80分以上为良
70分以上为中等
60分以上为合格
60分以下为不合格
*/
import java.util.Scanner;//导入包
public class Zuoye2{
public static void main(String[] args){
//1.定义一个int类型变量接收成绩
int a =0;
System.out.println("请输入成绩");
//2.录入学生成绩
Scanner sc =new Scanner(System.in);
a =sc.nextInt();
//3.判定输出学生成绩等级
if(a<= 90||a<100){
System.out.println("优");
}
else if(a>=80){
System.out.println("良");
}
else if(a>=70）{
System.out.println("中等");
}
else if(a>=60){
System.out.println("合格");
}
else if（a<0）{
System.out.println("成绩错误请重新出入成绩");
}
else if（a<100）{
System.out.println("成绩错误请重新出入成绩");
}
else{
System.out.println("不合格");
}
}
}
//1.采用if else方法判断学生成绩等级
//2. 利用Scanner录入学生成绩做判断
//3.用System.out.printlb()方法打印输出成绩级别
#include <stdio.h>
int main()
{
int score, m;
scanf("%d", &score);
while (score < 0 || score > 100){
printf("Error! Retry!\n");
scanf("%d", &score);
}
m= score / 10;
if (m>= 9)
printf("Grade is A!\n");
switch(m){
case 0: printf("Grade is E!\n"); break;
case 1: printf("Grade is E!\n"); break;
case 2: printf("Grade is E!\n"); break;
case 3: printf("Grade is E!\n"); break;
case 4: printf("Grade is E!\n"); break;
case 5: printf("Grade is E!\n"); break;
case 6: printf("Grade is D!\n"); break;
case 7: printf("Grade is C!\n"); break;
case 8: printf("Grade is B!\n"); break;
}
return 0;
}
扩展资料：
其他实现输出成绩等级‘A'、’B‘、'C'、‘D'、'E’。90分以上为A,80~89分为B，70~79分为C，60~69分为D，60分一下为E的方法：
#include <stdio.h>
int main()
{
int score;
scanf("%d", &score);
while (score < 0 || score >100){
printf("Error! Retry!\n");
scanf("%d", &score);
}
if (score < 60)
printf("Grade is E!\n");
else if (score >= 60 && score < 70)
printf("Grade is D!\n");
else if (score >= 70 && score < 80)
printf("Grade is C!\n");
else if (score >=80 && score < 90)
printf("Grade is B!\n");
else
printf("Grade is A!\n");
return 0;
}
修改完的代码如下：
#include<stdio.h>
void main()
{
int a,s;
scanf("%d",&s);
if(s==100)
a=9;
else
a=s/10;
switch(a)
{
case 0:printf("E\n");break;
case 1:printf("E\n");break;
case 2:printf("E\n");break;
case 3:printf("E\n");break;
case 4:printf("E\n");break;
case 5:printf("E\n");break;
case 6:printf("D\n");break;
case 7:printf("C\n");break;
case 8:printf("B\n");break;
case 9:printf("A\n");break;
default:printf("error\n");
}}本回答被提问者采纳
