C＋＋多线程的创建与使用

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>

DWORD WINAPI run(LPVOID p)
{
printf("three%d run..\n",p);
Sleep((DWORD)p*3000);
return (DWORD)p;
}

int main()
{
HANDLE three1 = NULL; //线程
HANDLE three2 = NULL;
DWORD uExitCode1 = 0; // 返回值
DWORD uExitCode2 = 0;
DWORD dwThId = 0;
DWORD dwThId1 = 0; // 线程id号
int c = 0;

three1 = CreateThread (NULL, 0, run, (LPVOID)1, 0, &dwThId);
three2 = CreateThread (NULL, 0, run, (LPVOID)2, 0, &dwThId1);

for (;;)
{
puts ("press any key to check thread ...");

_getch ();
//'GetExitCodeThread'函数来判断一个线程是否还在执行 说明 获取一个已
// 中止线程的退出代码 返回值 bool，非零表示成功，零表示失败。...

GetExitCodeThread (three2, &uExitCode2);

if (!c)
{
GetExitCodeThread (three1, &uExitCode1);

if (uExitCode1 == STILL_ACTIVE)
{
puts ("Thread1 still active");
}
else
{
printf ("Thread1 over with: %d\n", dwThId);

CloseHandle (three1);
c = 1;

printf ("Thread1 over with: %d\n",dwThId);
}
}

if (uExitCode2 == STILL_ACTIVE)
{
puts("Thread2 still active");
}
else
{
printf ("Thread2 over with: %d\n",dwThId1);
}

if ((uExitCode1!=STILL_ACTIVE) && (uExitCode2!=STILL_ACTIVE))
{
break;
}
}
// CloseHandle(three1); // 关闭线程句柄并不影响线程的执行
CloseHandle(three2);

return EXIT_SUCCESS;
}