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                # C 程序:從文件中讀取一行并顯示它 > 原文: [https://www.programiz.com/c-programming/examples/read-file](https://www.programiz.com/c-programming/examples/read-file) #### 在此示例中,您將學習從文件中讀取文本并將其存儲在字符串中,直到遇到換行符'\ n'。 要理解此示例,您應該了解以下 [C 編程](/c-programming "C tutorial")主題: * [C 文件處理](/c-programming/c-file-input-output) * [C 編程字符串](/c-programming/c-strings) * * * ## 從文件中讀取文本的程序 ```c #include <stdio.h> #include <stdlib.h> // For exit() function int main() { char c[1000]; FILE *fptr; if ((fptr = fopen("program.txt", "r")) == NULL) { printf("Error! opening file"); // Program exits if file pointer returns NULL. exit(1); } // reads text until newline is encountered fscanf(fptr, "%[^\n]", c); printf("Data from the file:\n%s", c); fclose(fptr); return 0; } ``` * * * 如果找到文件,則程序將文件內容保存到字符串`c`,直到遇到`'\n'`換行符。 假設`program.txt`文件在當前目錄中包含以下文本。 ```c C programming is awesome. I love C programming. How are you doing? ``` 該程序的輸出將是: ```c Data from the file: C programming is awesome. ``` 如果找不到文件`program.txt`,則此程序將顯示錯誤消息。
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