[問題] volatile void cast
開發平台(Platform): (Ex: VC++, GCC, Linux, ...)
GCC
額外使用到的函數庫(Library Used): (Ex: OpenGL, ...)
aio.h
問題(Question)：
aio.h 的 struct aiocb 之中有個 volatile void *aio_buf;
我這樣寫：
int* buffer = new int[100];
unsigned long long int sum(0);
...
cb.aio_buf = buffer;
...
for(int i=0; i<100; i++)
sum+ = (unsigned long long int)cb.aio_buf[i]; //這行出現錯誤
...
錯誤結果(Wrong Output)：
code.cpp: In function 'int main()':
code.cpp:46: error: expected primary-expression before '=' token
code.cpp:46: error: pointer of type 'void *' used in arithmetic
code.cpp:46: error: 'volatile void*' is not a pointer-to-object type
程式碼(Code)：(請善用置底文網頁, 記得排版)
http://ppt.cc/BVnj
補充說明(Supplement)：
http://ppt.cc/5C8d (aio.h)
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感謝XD 不過這樣只改進了第一個error 剩下兩個仍舊
※ 編輯: morris0117 來自: 59.124.107.50 (10/27 13:07)
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