用法比较单一，请大家结合代码和注释进行理解

#include "stdio.h"
#include "stdlib.h"
int main() {FILE *fp;           //定义文件指针char filename[200];     //存放输入的文件名字char str[200];         //存放一个职工的信息int i, j;printf("Please enter the file name:\n");gets(filename);          //输入文件名字fp = fopen(filename, "w");  //以文本模式按只写方式打开文件if (fp == NULL)                    //判断文件是否成功打开{printf("File open failed!\n");exit(0);}printf("Please input the information of 5 employees:\n");for(i=0;i<5;i++)    //输入五个职工的信息{gets(str);for(j=0;str[j]!='\0';j++){   fputc(str[j],fp);   //将str里面的内容写入fp文件中}fputc('\n',fp); }fclose(fp);                //关闭文件printf("The employee information was successfully saved in the %s file\n",filename);return 0;}

测试结果

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