标签：fread() fwrite fseek() ftell() rewind()
#include <stdio.h>
#include <stdlib.h>
int main(void)
{
struct testF{
int a;
int b;
float c;
};
struct testF struct1[5]={{5, 4, 5.4}, {4, 3, 4.3}, {3, 2, 3.2}, {2, 1, 2.1}, {1, 0, 1.01}};
FILE *fpW;
if((fpW=fopen("./testFile", "wb")) == NULL){
printf("Open file faied, yoou will exit this program.\n");
exit(1);
}
int i;
for(i = 0; i< 5; i++){
fwrite(&struct1[i], sizeof(struct1[i], 1, fpW);
}
fclose(fpW);
FILE *fpR;
struct testF struct2;
fseek(fpR, 0, SEEK_END); //将指针定在文件结尾处
long fSize = ftell(fpR); //返回文件的大小
rewind(fpR); //将指针重新定位在文件开始处
while(1){
fread(&struct2, sizeof(struct2), 1, fpR);
printf("%d %d %f", struct2.a, struct2.b, struct2.c);
if(ftell(fpR) == fSize) //判断是否已读到文件结尾处
break;
}
fclose(fpR);
return 0;
}关于C语言中使用fread()读取整个文件的心得,布布扣,bubuko.com
标签：fread() fwrite fseek() ftell() rewind()
原文地址：http://dearleo.blog.51cto.com/6718690/1533250
