查找系统中的大文件(Windows) C++程序

#include <iostream>
#include <Windows.h>
#include <string.h>
#include <stdlib.h>
#include <string>
#include <utility>
#include <map>
using namespace std;

const int max_size = 102400000; //100M

map<int, pair<string, string>> fileInfoMap;

void FindFile(char * pFilePath)
{
	WIN32_FIND_DATA FindFileData;
	HANDLE hFind = INVALID_HANDLE_VALUE;
	char DirSpec[MAX_PATH + 1];// 指定路径
	DWORD dwError;

	strncpy(DirSpec, pFilePath, strlen(pFilePath) + 1);
	strncat(DirSpec, "/*", 3);

	hFind = FindFirstFile(DirSpec, &FindFileData);

	if (hFind == INVALID_HANDLE_VALUE){
		cout << "无效文件句柄. 错误原因:" << GetLastError() << endl;
		return;
	}
	else
	{
		if (FindFileData.dwFileAttributes != FILE_ATTRIBUTE_DIRECTORY)
		{
		//	cout << "filename：" << FindFileData.cFileName << "	";
		//	cout << "filesize：" << fileSize << endl;
			int fileSize = FindFileData.nFileSizeLow;
			if (fileSize > max_size)
			{
				fileInfoMap.insert(make_pair(fileSize, make_pair(FindFileData.cFileName, DirSpec)));
			}
		}
		else if (FindFileData.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY
			&& strcmp(FindFileData.cFileName, ".") != 0
			&& strcmp(FindFileData.cFileName, "..") != 0)
		{   //找到目录
			char Dir[MAX_PATH + 1];
			strcpy(Dir, pFilePath);
			strncat(Dir, "/", 2);
			strcat(Dir, FindFileData.cFileName);

			FindFile(Dir);
		}

		while (FindNextFile(hFind, &FindFileData) != 0)
		{
			if (FindFileData.dwFileAttributes != FILE_ATTRIBUTE_DIRECTORY)
			{   //找到文件
				int fileSize = FindFileData.nFileSizeLow;//文件大小
				if (fileSize > max_size)
				{
					fileInfoMap.insert(make_pair(fileSize, make_pair(FindFileData.cFileName, DirSpec)));
				}
			}
			else if (FindFileData.dwFileAttributes == FILE_ATTRIBUTE_DIRECTORY
				&& strcmp(FindFileData.cFileName, ".") != 0
				&& strcmp(FindFileData.cFileName, "..") != 0)
			{ //找到目录
				char Dir[MAX_PATH + 1];
				strcpy(Dir, pFilePath);
				strncat(Dir, "/", 2);
				strcat(Dir, FindFileData.cFileName);
				FindFile(Dir);
			}

		}

		dwError = GetLastError();
		FindClose(hFind);
		if (dwError != ERROR_NO_MORE_FILES)
		{
			printf("FindNextFile error. Error is %u ", dwError);
			return;
		}
	}
}

int main()
{
	FindFile("D:");
	FindFile("E:");
	map<int, pair<string, string>>::iterator myiter = fileInfoMap.begin();
	for ( ; myiter != fileInfoMap.end(); ++myiter)
	{
		cout << "size: " << myiter->first << "  " 
			<< "name：" << myiter->second.first << "  " 
			<< "path：" << myiter->second.second << endl;
	}
		
	system("pause");
}