鄭傳諭

1. score=input("請輸入你的成績:")
   
2. if score>=90 and score<100
   
3.     print("優等")
   
4. elif score>=80 and score<89
   
5.     print("甲等")
   
6. if score>=70 and score<79
   
7.     print("乙等")
   
8. if score>=60 and score<69
   
9.     print("丙等")   
   
10. else:
    
11.     print("輸入錯誤!")

複製代碼