#include<stdio.h>
int main()
{
int score;
printf("请输入你的成绩\n");
scanf("%d",&score);
if (score>=90&&score<=100)
printf("成绩优秀!");
else if(score>=80&&score<=90)
printf("成绩优良!");
else if(score>=70&&score<=80)
printf("成绩一般!");
else if(score>=60&&score<=70)
printf("成绩合格!");
else
printf("成绩差!");