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                ## strlen ## 返回字符串長度 ### 表頭文件 ### ``` #include<string.h> ``` ### 定義函數 ### ``` size_t strlen(const char *s); ``` ### 函數說明 ### strlen()用來計算指定的字符串s的長度,不包括結束字符"\0"。 ### 返回值 ### 返回字符串s的字符數。 ### 范例 ### ``` /*取得字符串str的長度*/ #include<string.h> main() { char *str = "12345678"; printf("str length = %d\n", strlen(str)); } ``` ### 執行 ### ``` str length = 8 ```
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