你好,我有一些關於C++變量類型(char)的問題。
我讀了一些網站,這個字符支持範圍從(-128到127)和無符號(0到255)。這是什麼意思?C++字符類型的長度和大小
字符支持不只是數字,他們爲什麼說(-128到127)?
這個範圍是什麼意思?
範圍爲什麼?
我的另一個問題是:當我們爲什麼需要設置未簽名或簽名或...之前焦炭我可以用這
const char * Data;
Data = "dddddddddddddddddddddddddddddddddddddddddddddddde21312313dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddde21312313dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddde21312313dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddde21312313dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddde21312313dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd";
?
這個動作(也使用*
)系統自動檢測字符的長度並保持正常和標準大小的存儲大小...爲什麼我們需要設置大小如(char Data[255])
當我們可以做到這一點,並有動態大小和跳過靜態大小?
或與此行動爲什麼我們需要(wchar_t
)了嗎??? !
聽起來像你可以使用[良好的C++書](http://stackoverflow.com/questions/388242/the-definitive-c-book-guide-and-list) – NathanOliver
什麼阻止你使用大寫字母? –
我沒有在那個鏈接上找到我的答案 – Samethings