14-线程使用

unsigned WINAPI main_xh(void* arg)		//函数必须用unsigned WINAPI作为返回值才能作为指针传入
{										//函数参数必须是void*类型传入，再在内部变为实际约定的类型
	int num = *((int*)arg);
	for (int i = 0; i < num; i++)
	{
		printf("xh");
		Sleep(3000);
	}
	return 1;
}

_beginthreadex(NULL, 0, &main_xh, (void*)&xh, 0, &xh_id);

#include<iostream>
#include<Windows.h>
#include<process.h>
#include<stdlib.h>
using namespace std;
unsigned WINAPI main_xh(void* arg)
{
	int num = *((int*)arg);
	for (int i = 0; i < num; i++)
	{
		printf("xh");
		Sleep(3000);
	}
	return 1;
}

unsigned WINAPI main_xm(void* arg)
{
	int num = *((int*)arg);
	for (int i = 0; i < num; i++)
	{
		printf("xm");
		Sleep(2000);
	}
	return 1;
}

unsigned WINAPI main_lw(void* arg)
{
	int num = *((int*)arg);
	for (int i = 0; i < num; i++)
	{
		printf("lw");
		Sleep(5000);
	}
	return 1;
}


int main()
{
	int xh = 20;
	int xm = 30;
	int lw = 50;
	unsigned int xh_id,xm_id,lw_id;
	_beginthreadex(NULL, 0, &main_xm, (void*)&xm, 0, &xm_id);
	_beginthreadex(NULL, 0, &main_xh, (void*)&xh, 0, &xh_id);
	_beginthreadex(NULL, 0, &main_lw, (void*)&lw, 0, &lw_id);
	system("pause");
	return 0;

}