4、选择结构的嵌套
if语句里面继续套用if语句
score=int(input(""))
degree="ABCDE"
num=0
if score>100 or score<0
print("overlimited")
else:
num=score//10
if num<6:
num=5
print(degree[9-num])
4、选择结构的嵌套
if语句里面继续套用if语句
score=int(input(""))
degree="ABCDE"
num=0
if score>100 or score<0
print("overlimited")
else:
num=score//10
if num<6:
num=5
print(degree[9-num])