C language searches the instance code of the specified file

#include<stdio.h>
#include<windows.h>
void FindFile(char* ,char* );
int count=0;//Number of documents
char fname[32];
#define BUFSIZE 256
int main(int argc,char* argv[])
{
        char szLogicalDriveStrings[BUFSIZE];
    DWORD iLength;
    int iSub;
    printf(" Please enter the file name to search: ");
    scanf("%s",fname);
    ZeroMemory(szLogicalDriveStrings, BUFSIZE);
    iLength = GetLogicalDriveStringsA(BUFSIZE-1, szLogicalDriveStrings);
    for(iSub=0; iSub<iLength; iSub+=4) 
    {
    //If not fixed disk drive: local hard disk or removable hard disk, ignore
      if(GetDriveType(szLogicalDriveStrings+iSub)!=3)
            continue;
    FindFile(szLogicalDriveStrings+iSub,"*.*");
    }
    printf(" Find the total %d A file ...n",count);
    scanf("%*d");
    return 0;
}
void FindFile(char* pfilename,char* pfilter)
{
    WIN32_FIND_DATA findfiledate;  
    HANDLE hfind;
    char filename[512];
    char lpFileName[512];
    char _lpFileName[512];
    int i;
    int result;
    for(i=0;*(pfilename+i)!='0';i++)
          filename[i]=*(pfilename+i);
    filename[i]='0';
    //If the last character is not ''
    if(filename[strlen(filename)-1]!='\') 
        strcat(filename,"\"); //Add ''
    strcpy(lpFileName,filename);
    strcat(lpFileName,pfilter);
    hfind=FindFirstFile(lpFileName,&findfiledate);
    if(hfind==INVALID_HANDLE_VALUE) 
        return;
    do
    {
        //If it's not a directory
        if(!(findfiledate.dwFileAttributes&FILE_ATTRIBUTE_DIRECTORY))
        {
            //If the specified file is found
            if(0==strcmp(fname,findfiledate.cFileName))
           { 
               printf("%s%sn",filename,findfiledate.cFileName);
                 count++;
            }
        }
        //If it's a directory
        else
        {
            //. And... No output
            if(findfiledate.cFileName[0]!='.')
            {
                strcpy(_lpFileName,filename);
                strcat(_lpFileName,findfiledate.cFileName);
                FindFile(_lpFileName,pfilter);  //recursive
            }
        }
    }while(FindNextFile(hfind,&findfiledate));//FindNextFile returns true and continues the search
    FindClose(hfind);
    return;
}

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Use recursive search file, low efficiency, use multithreading effect better.