1、用stat()函数来获取
int main(){ struct stat st stat( "file.txt", &st )printf(" file size = %d\n", st.st_size)return 0}2、用ftell()函数来获取
int main(){FILE *fp fp=fopen( "file.txt", "r") fseek(fp, 0L, SEEK_END ) printf(" file size = %d\n", ftell(fp) ) return 0}
c语言可以通过stat()函数获得文件属性,通过返回的文件属性,从中获取文件大小。#include
<sys/stat.h>
可见以下结构体和函数
struct
stat
{
_dev_t
st_dev
_ino_t
st_ino
unsigned
short
st_mode
short
st_nlink
short
st_uid
short
st_gid
_dev_t
st_rdev
_off_t
st_size
//文件大小
time_t
st_atime
time_t
st_mtime
time_t
st_ctime
}
stat(const
char
*,
struct
_stat
*)
//根据文件名得到文件属性
参考代码:
#include <sys/stat.h>
void main( )
{
struct stat buf
if ( stat( "test.txt", &buf ) <0 )
{
perror( "stat" )
return
}
printf("file size:%d\n", buf.st_size )
}