VC获取文件大小!

方法一:

WIN32_FIND_DATA fileInfo;
HANDLE hFind;
DWORD fileSize;
const char *fileName = 文件的路径及名字;
hFind = FindFirstFile(fileName ,&fileInfo);
if(hFind != INVALID_HANDLE_VALUE)
fileSize = fileInfo.nFileSizeLow;
FindClose(hFind);

方法二：

HANDLE hFile; // the file handle
DWORD dwFileSize; // temporary storage for file sizes

// Create the test file. Open it "Create Always" to overwrite any
// existing file. The data is re-created below.
hFile = CreateFile(lpcTheFile, GENERIC_READ | GENERIC_WRITE, 0, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);

if (hFile == INVALID_HANDLE_VALUE) {
printf("hFile is NULL\n");
return 4;
}
dwFileSize = GetFileSize(hFile, NULL);
printf("hFile size: %10d\n", dwFileSize);

 

C和C++获取文件大小的方法总结

2008年03月31日 星期一 14:21

 

1.MFC中的方法：(C++) CFileStatus status; CFile::GetStatus("D:\\test.txt",status); long lSizeOfFile; lSizeOfFile = status.m_size; lSizeOfFile的值就是D:\\test.txt文件的大小 2.标准C获得文件大小的5种方法 (注意："__FILE__"指的是当前文件，你可以改为有效路径的目标文件，比如"D:\\test.txt"） #include "stdafx.h" #include "stdio.h" #include <sys/stat.h> #include <io.h> #include <FCNTL.H> int getfilesize() {     int iresult;     struct _stat buf;     iresult = _stat(__FILE__,&buf);     if(iresult == 0)     {         return buf.st_size;     }     return NULL; } int getfilesize01() {     int fp;     fp=_open(__FILE__,_O_RDONLY);     if(fp==-1)         return NULL;     return _filelength(fp);     //return NULL; } int getfilesize02() {     int fp;     fp=_open(__FILE__,_O_RDONLY);     if(fp==-1)         return NULL;     return _lseek(fp,0,SEEK_END);     //return NULL; } int getfilesize03() {     int fp;     fp=_open(__FILE__,_O_RDONLY);     if(fp==-1)         return NULL;     return _lseek(fp,0,SEEK_END);     //return NULL; } int getfilesize04() {     FILE *fp;     if((fp=fopen(__FILE__,"r"))==NULL)         return 0;     fseek(fp,0,SEEK_END);     return ftell(fp);    //return NULL; } int getfilesize05() {     FILE *fp;     char str[1];     if((fp=fopen(__FILE__,"rb"))==NULL)         return 0;     for(int i = 0;!feof(fp);i++)     {         fread(&str,1,1,fp);             }     return i - 1;    //return NULL; } int main(int argc, char* argv[]) {         printf("getfilesize()=%d\n",getfilesize());     printf("getfilesize01()=%d\n",getfilesize01());     printf("getfilesize02()=%d\n",getfilesize02());     printf("getfilesize03()=%d\n",getfilesize03());     printf("getfilesize04()=%d\n",getfilesize04());     printf("getfilesize05()=%d\n",getfilesize05());     return 0; }