if...elif...else

tonyh

1. score=float(input("請輸入你的成績: "))
   
2. if score>100 or score<0:
   
3.     print("輸入錯誤")
   
4. elif score>=90:
   
5.     print("優")
   
6. elif score>=80:
   
7.     print("甲")
   
8. elif score>=70:
   
9.     print("乙")
   
10. elif score>=60:
    
11.     print("丙")
    
12. else:
    
13.     print("不及格")  

複製代碼

1. score=float(input("請輸入你的成績: "))
   
2. if 90<=score<=100:
   
3.     print("優")
   
4. elif 80<=score<90:
   
5.     print("甲")
   
6. elif 70<=score<80:
   
7.     print("乙")
   
8. elif 60<=score<70:
   
9.     print("丙")
   
10. elif 0<=score<60:
    
11.     print("不及格")
    
12. else:
    
13.     print("輸入錯誤")

複製代碼

1. score=float(input("請輸入你的成績: "))
   
2. if score>=90<=100:
   
3.     print("優")
   
4. elif score>=80<90:
   
5.     print("甲")
   
6. elif score>=70<80:
   
7.     print("乙")
   
8. elif score>=60<70:
   
9.     print("丙")
   
10. elif score>=0<60:
    
11.     print("不及格")
    
12. else:
    
13.     print("輸入錯誤")

複製代碼

1. score=input("請輸入你的成績: ")
   
2. score=float(score)
   
3. if score>=90 and score<=100:
   
4.     print("優等!")
   
5. elif score>=80 and score<90:
   
6.     print("甲等!")
   
7. elif score>=70 and score<80:
   
8.     print("乙等!")
   
9. elif score>=60 and score<70:
   
10.     print("丙等!")
    
11. elif score>=0 and score<60:
    
12.     print("不及格!")
    
13. else:
    
14.     print("輸入錯誤!")

複製代碼