矯博宇

1. a=int(input("輸入你的成績:"))
   
2. if a>=90 and a<=100:
   
3.     print("優等")
   
4. elif a>=80 and a<90:
   
5.    
   
6.     print("甲等")
   
7. elif a>=70 and a<80:
   
8.     print("乙等")
   
9. elif a>=60 and a<70:
   
10.     print("丙等")
    
11. elif a>=0 and a<60:
    
12.     print("不及格")
    
13. else:
    
14.     print("輸入已成績高於最大值")

複製代碼