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                ## fscanf ## 格式化字符串輸入 ### 相關函數 ### scanf,sscanf ### 表頭文件 ### ``` #include<stdio.h> ``` ### 定義函數 ### ``` int fscanf(FILE *stream, const char *format, ...); ``` ### 函數說明 ### fscanf()會自參數stream的文件流中讀取字符串,再根據參數format字符串來轉換并格式化數據。格式轉換形式請參考scanf()。轉換后的結構存于對應的參數內。 ### 返回值 ### 成功則返回參數數目,失敗則返回-1,錯誤原因存于errno中。 ### 范例 ### ``` #include<stdio.h> main() { int i; unsigned int j; char s[5]; fscanf(stdin,”%d %x %5[a-z] %*s %f”,&i,&j,s,s); printf(“%d %d %s \n”,i,j,s); } ``` ### 執行 ### ``` 10 0x1b aaaaaaaaa bbbbbbbbbb /*從鍵盤輸入*/ 10 27 aaaaa ```
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