07/11/09 10:24:19
ビット列の出現個数を数えたいのですが毎回結果が違います 何ででしょうか?
#include <iostream>
#include <windows.h>
#include <process.h>
using namespace std;
#define N 1000
#define K 320000
unsigned int su[256];
unsigned WINAPI open(void *p){
unsigned long size; char *buf=new char [K+100];
HANDLE fp=CreateFile((char*)p,GENERIC_READ,0,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
ReadFile(fp,buf,K,&size,NULL);
for(int i=0;i<size;i++)su[ (unsigned char)buf[i] ]++;}
main(){
WIN32_FIND_DATA fd;
char path[200]="d:\\aaa\\",serchpath[200];
strcpy(serchpath, path); strcat(serchpath, "*");
SetCurrentDirectory(path);
HANDLE hd = FindFirstFile(serchpath, &fd);
int n; HANDLE hf[N];
for(n=0;n<256;n++)su[n]=0;
for(n=0;;n++){
for(;;){if(!FindNextFile(hd, &fd))goto end;
if(!(fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY))break;}
hf[n]=(HANDLE)_beginthreadex(NULL, 0, open,(void*)fd.cFileName, 0 ,NULL);}
WaitForMultipleObjects(N, hf, TRUE, INFINITE);
end:
for(n=0;n<256;n++)cout<<n<<" no kosu "<<su[n]<<endl;}