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
",read);
/////////////////读文件////////////////
fclose(pf);

主函数（结构体读写）

stu write;
strcpy(write.name,"hahha");//在读写不知道字符串大小的情况下要加“”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
",read.name);
///////////////读文件////////////////
fclose(pf);