C语言FILE读写操作

头文件

#include <stdio.h>#include <string.h>

主函数（字符串读写）

char write[] = "filewrite";FILE *pf;//////////////写文件/////////////////*pf=fopen("d:\\myfile.txt","wb");fwrite(&write,sizeof(write),1,pf);*////////////////写文件/////////////////////////////////读文件////////////////char read[20];pf=fopen("d:\\myfile.txt","rb");fread(&read,sizeof(write),1,pf);printf("%s\n",read);/////////////////读文件////////////////fclose(pf);

主函数（结构体读写）

stu write;strcpy(write.name,"hahha\0");//在读写不知道字符串大小的情况下要加“\0”标明字符串结束FILE *pf;////////////////写文件//////////////////pf=fopen("d:\\myfile.txt","wb");//fwrite(&write,sizeof(write),1,pf);///////////////写文件///////////////*////////////////读文件////////////////stu read;pf=fopen("d:\\myfile.txt","rb");fread(&read,sizeof(read),1,pf);printf("%s\n",read.name);///////////////读文件////////////////fclose(pf);