为什么刚才我做了一个多线程的循环 CPU还是不能100%

// zzz.cpp : Defines the entry point for the console application.
//
#include "stdafx.h"
#include "windows.h"
#include "stdio.h"
int workID=10;
int maxID=500000;
HANDLE hMutex;
DWORD __stdcall ThreadFunOne(LPVOID lParam)
{
WaitForSingleObject(hMutex,INFINITE);
for(;;)
{
if(workID<maxID)
{
// Sleep(100);
workID+=1;
 printf("当前工作线程1,%i\n",workID);
}
  ReleaseMutex(hMutex);
}
return 0;
}
DWORD __stdcall ThreadFunTwo(LPVOID lParam)
{
WaitForSingleObject(hMutex,INFINITE);
for(;;)
{
if(workID<maxID)
{ 
// Sleep(100);
workID+=1;
 printf("当前工作线程2,%i\n",workID);
}
ReleaseMutex(hMutex);
}
return 0;
}
DWORD __stdcall ThreadFunThree(LPVOID lParam)
{
WaitForSingleObject(hMutex,INFINITE);
for(;;)
{
if(workID<maxID)
{
// Sleep(100);
workID+=1;
 printf("当前工作线程3,%i\n",workID);
}
  ReleaseMutex(hMutex);
}
return 0;
}
DWORD __stdcall ThreadFunFour(LPVOID lParam)
{
WaitForSingleObject(hMutex,INFINITE);
for(;;)
{
if(workID<maxID)
{
// Sleep(100);
workID+=1;
 printf("当前工作线程4,%i\n",workID);
}
  ReleaseMutex(hMutex);
}
return 0;
}
int main(int argc, char* argv[])
{
hMutex=CreateMutex(NULL,false,"mutex");
HANDLE hThread1,hThread2,hThread3,hThread4;
hThread1=::CreateThread(NULL,0,ThreadFunOne,NULL,0,NULL);
 hThread2=::CreateThread(NULL,0,ThreadFunTwo,NULL,0,NULL);
hThread3=::CreateThread(NULL,0,ThreadFunThree,NULL,0,NULL);
hThread4=::CreateThread(NULL,0,ThreadFunFour,NULL,0,NULL);
 while(true)
{
}
return 0;
}

我一直以为多线程就能让4个核都用上呢, 结果一个线程是48%, 多个线程还是50%多点.

那怎么弄才行啊

我刚开始学C,最基本的for循环还没弄懂呢

不是啊,学着玩玩的

嘛，你开两个
在任务管理器里指定核心。。

好啊..我也有很多问题请教呢

唉，我根本就没去学多核编程