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Usage of fputc function in C language

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2020-06-19 11:51:126270browse

Usage of fputc function in C language

C语言中fputc函数的用法

C语言中fputc函数的用法为“int fgetc (FILE *fp)”,该函数的作用是从指定的文件中读取一个字符, 读取成功时会返回读取到的字符,读取到文件末尾或读取失败时返回EOF。

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示例代码

#include<stdio.h>
int main(){
    FILE *fp;
    char ch;
   
    //如果文件不存在,给出提示并退出
    if( (fp=fopen("D:\\demo.txt","rt")) == NULL ){
        puts("Fail to open file!");
        exit(0);
    }

    //每次读取一个字节,直到读取完毕
    while( (ch=fgetc(fp)) != EOF ){
        putchar(ch);
    }
    putchar(&#39;\n&#39;);  //输出换行符

    fclose(fp);
    return 0;
}

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