windows C++多线程实例（一个线程不停加/另外一个线程不停减,第三个线程进行判断挂起/恢复加线程/减线程）

#include "stdafx.h"
#include 
#include 
using namespace std;

HANDLE hThread;
HANDLE hThread2;
HANDLE hThread3;

DWORD WINAPI FirstThread(PVOID pvParam) {
	int* value = (int*)pvParam;
	while (1)
	{		
		(*value)++;
		printf("+++ x=%d\n", *value);
		Sleep(200);
	}
	ExitThread(1);
	return(0);
}

DWORD WINAPI SecondThread(PVOID pvParam) {
	int* value = (int*)pvParam;
	while (1)
	{		
		(*value)--;
		printf("--- x=%d\n", *value);
		Sleep(1000);
	}
	ExitThread(1);
	return(0);
}

DWORD WINAPI ThirdThread(PVOID pvParam) {
	int* value = (int*)pvParam;
	bool suspendAdd = false;
	bool suspendLess = false;
	while (1)
	{
		if (*value > 200 && suspendAdd == false)
		{
			printf("read x=%d,suspend add\n", *value);
			SuspendThread(hThread);
			suspendAdd = true;
			if (suspendLess)
			{
				ResumeThread(hThread2);
				suspendLess = false;
			}
		}
		else if (*value < 180 && suspendLess == false)
		{
			printf("read x=%d, suspend less\n", *value);
			SuspendThread(hThread2);
			suspendLess = true;
			if (suspendAdd)
			{
				ResumeThread(hThread);
				suspendAdd = false;
			}
		}
		Sleep(100);
	}
	ExitThread(1);
	return(0);
}

int main() {
	int x = 190;
	DWORD dwThreadId;
	hThread = CreateThread(NULL, 0, FirstThread, &x, 0, &dwThreadId);
	
	DWORD dwThreadId2;
	hThread2 = CreateThread(NULL, 0, SecondThread, &x, 0, &dwThreadId2);
	
	DWORD dwThreadId3;
	hThread3 = CreateThread(NULL, 0, ThirdThread, &x, 0, &dwThreadId3);


	WaitForSingleObject(hThread, INFINITE);
	WaitForSingleObject(hThread2, INFINITE);
	WaitForSingleObject(hThread3, INFINITE);
	CloseHandle(hThread);
	CloseHandle(hThread2);
	CloseHandle(hThread3);

	system("pause");
	return 0;
}