VC C/C++ 4种方法获取文件大小 Windows API

#include <iostream>
#include <windows.h>
#include <io.h>
#include <sys\stat.h>
using namespace std;
void main()
{
char *filepath = "C:\\1.txt";
//方法一

HANDLE handle = CreateFile(filepath, FILE_READ_EA, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
if (handle != INVALID_HANDLE_VALUE)
{
int size = GetFileSize(handle, NULL);
cout<<size<<endl;
CloseHandle(handle);
}

//方法二

WIN32_FIND_DATA fileInfo;
HANDLE hFind;
DWORD fileSize;
hFind = FindFirstFile(filepath ,&fileInfo);
if(hFind != INVALID_HANDLE_VALUE)
fileSize = fileInfo.nFileSizeLow;
cout<<fileSize<<endl;
FindClose(hFind);

//方法三

FILE* file = fopen(filepath, "r");
if (file)
{
int size = filelength(fileno(file));
cout<<size<<endl;
fclose(file);
}

//方法四 推荐

struct _stat info;
_stat(filepath, &info);
int size = info.st_size;
cout<<size<<endl;

return ;
}