if...elif...else

tonyh

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

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:  #多擇一
   
4.     print("優")
   
5. elif score>=80 and score<90:
   
6.     print("甲")
   
7. elif score>=70 and score<80:
   
8.     print("乙")
   
9. elif score>=60 and score<70:
   
10.     print("丙")
    
11. elif score>=0 and score<60:
    
12.     print("不及格")
    
13. else:
    
14.     print("輸入錯誤~斬!")

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