C语言教程：fputc()和fgetc()函数

fputc()函数用于将单个字符写入文件。它将一个字符输出到流。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

fputc()函数的语法：文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

int fputc(int c, FILE *stream)

示例：文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

创建一个源文件：fputc-write-file.c，其代码如下 -文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

#include <stdio.h>  
main() {
    FILE *fp;
    fp = fopen("myfile.txt", "w");//opening file  
    fputc('y', fp);//writing single character into file  
    fputc('i', fp);
    fputc('i', fp);
    fputc('b', fp);
    fputc('a', fp);
    fputc('i', fp);
    fputc('.', fp);
    fputc('c', fp);
    fputc('o', fp);
    fputc('m', fp);
    fclose(fp);//closing file  
    printf("character have all write to file: myfile.txt\n");
}

执行上面示例代码，得到以下结果 -文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

character have all write to file: myfile.txt

读取文件：fgetc()函数文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

fgetc()函数从文件中返回单个字符。它从流中获取一个字符。它在文件结尾返回EOF。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

语法如下：文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

int fgetc(FILE *stream)

为了方便演示，这里创建一个源文件：fgetc-read-file.c，其代码如下所示 -文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

#include <stdio.h>  

void main() {
    FILE *fp;
    char c;

    fp = fopen("myfile.txt", "r");

    while ((c = fgetc(fp)) != EOF) {
        printf("%c", c); // 一个一个字符地读取
    }
    fclose(fp);

}

注意：首先确定执行上面的fputc-write-file.c程序，或自己创建一个文件：myfile.txt文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

执行上面示例代码，得到以下结果 -文章源自菜鸟学院-https://www.cainiaoxueyuan.com/ymba/6467.html

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