什么時候num+=1放print前什么時候放之后?。?/h1>
s?=?'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
num?=?1
for?ch?in?s:
????if?num?<?10:
????????num?=?num?+?1
????????continue?#?當num?<?10時，跳過后續循環代碼，繼續下一次循環
????print(ch)
????num?=?num?+?1
?#再像這一個
num?=?0?
num?=?0?
while?num?<=?1000:??
????num?=?num?+?1
????if?num?%?2?==?1:?
????continue
????sum?=?sum?+?num?
print(sum)
s?=?'ABCDEFGHIJKLMNOPQRSTUVWXYZ' num?=?1 for?ch?in?s: ????if?num?<?10: ????????num?=?num?+?1 ????????continue?#?當num?<?10時，跳過后續循環代碼，繼續下一次循環 ????print(ch) ????num?=?num?+?1 ?#再像這一個 num?=?0? num?=?0? while?num?<=?1000:?? ????num?=?num?+?1 ????if?num?%?2?==?1:? ????continue ????sum?=?sum?+?num? print(sum)
2022-09-01
我覺得可以細細分析一遍，每一行代碼的邏輯，弄清楚每一行計算機都干嘛了，就能理解為什么有時候需要有num=num+1