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                ## memset ## 將一段內存空間填入某值 ### 相關函數 ### bzero,swab ### 表頭文件 ### ``` #include<string.h> ``` ### 定義函數 ### ``` void *memset(void *s, int c, size_t n); ``` ### 函數說明 ### memset()會將參數s所指的內存區域前n個字節以參數c填入,然后返回指向s的指針。在編寫程序時,若需要將某一數組作初始化,memset()會相當方便。 ### 返回值 ### 返回指向s的指針。 ### 附加說明 ### 參數c雖聲明為int, 但必須是unsigned char ,所以范圍在0到255之間。 ### 范例 ### ``` #include <string.h> main() { char s[30]; memset (s,'A',sizeof(s)); s[30]='\0'; printf("%s\n",s); } ``` ### 執行 ### ``` AAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ```
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