作者查詢 / LPH66
作者 LPH66 在 PTT [ C_and_CPP ] 看板的留言(推文), 共6694則
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1F推:簡單的答案: 1.debugger 2.yes 3.yes 4.yes 5.no02/25 22:50
2F推:提示: 依序輸出 每個人的第九格; \n; 每個人的第八格; \n;02/25 19:02
3F→:等等 然後"每個人的第N格"再用一層就能解決了02/25 19:03
7F→:指數是負的直接用沒有關係啊...底數不要是負的就好02/25 19:04
1F推:你印字的迴圈只要印到字串長度即可02/25 01:03
2F→:<cstring>裡有個strlen可以用02/25 01:04
4F推:樓上正確 想想13!在int就爆了...02/22 09:18
2F推:socket的東西有些也是 platform-dependent 的 也要注意一點02/10 13:59
2F推:在scanf後面加個getchar02/08 18:12
3F→:那是因為你按的 Enter 還沒被吃掉02/08 18:12
5F推:問題如同前幾篇 i++結算的時間不確定02/04 18:33
6F→:雖然順序是由左到右 (<<是左結合) 但i++卻不確定會何時結算02/04 18:33
12F推:求值歸求值 問題在於i什麼時候+102/04 21:24
13F→:後面的寫法在第一個;時確定i已經加1了02/04 21:24
14F→:前面的寫法則要到那條的;才會確定i已經加102/04 21:25
15F→:但這卻是在前式後面的 i 求值之後02/04 21:25
16F→:至於此時的 i加1 和 後面的i求值 這兩件事是不確定先後的02/04 21:26
17F→:(順帶一提, 某些compiler因為方便實作的關係02/04 21:26
18F→: 左結合的東西會實作成每個operand是反過來求值02/04 21:27
19F→: 至於是不是一定反過來求則一樣是未規定)02/04 21:27
20F推:噢我忘了 overloaded operator 等於 function call...@_@02/04 21:37
21F→:所以下下篇是對的 這裡剛好是特例 前面的i++會在後面i前結算02/04 21:38
1F推:沒解 因為你撞到compiler的bug了02/04 17:27
11F→:正解是一樓 未定義行為 因為你在z++還沒結算前又去抓z02/04 01:36
12F→:這樣z++的時間點是隨人實作的02/04 01:36
13F→:(應該說隨compiler實作)02/04 01:36
14F→:參考置底十誡之九02/04 01:37