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C stdio fputc() 函数

❮ C stdio 库


示例

将一个字符写入文件

FILE *fptr;

// 以写入模式打开文件
fptr = fopen("filename.txt", "w");

// 将一个字符写入文件
fputc('A', fptr);

fclose(fptr);

定义和用法

The fputc() 函数将单个字符写入文件并将位置指示器向前移动一个字符。

The fputc() 函数在 <stdio.h> 头文件中定义。


语法

fputc(int c, FILE * fptr);

参数值

参数 描述
c 必需。字符的 ASCII 值。此参数也可以使用实际字符。
fptr 必需。文件指针,通常由 fopen() 函数创建。

技术细节

返回值 一个 int 值,表示字符的 ASCII 值,如果字符无法写入文件,则为常量 EOF

❮ C stdio 库

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