互斥锁练习（2018-09-18）

要求：A线程和B线程同时工作，A、B线程打印一串字符串休息5秒后再次打印该字符串，在A线程打印的过程中，B线程不能打断A线程的打印信息

#include <stdio.h>

#include <stdlib.h>

#include <Windows.h>

HANDLE hMutex ;

DWORD WINAPI thread_A(LPVOID lpParam)

{

WaitForSingleObject(hMutex,INFINITE);

for(int i=0;i<2;i++)

{

printf("AAAAA\n");

Sleep(800);

}

ReleaseMutex(hMutex);

return 0;

}

DWORD WINAPI thread_B(LPVOID lpParam)

{

WaitForSingleObject(hMutex,INFINITE);

for(int i=0;i<2;i++)

{

printf("BBBBB\n");

Sleep(800);

}

ReleaseMutex(hMutex);

return 0;

}

int main()

{

hMutex = CreateMutex(NULL,false,NULL);

HANDLE buf[2];

buf[0] = CreateThread(NULL,0,thread_A,NULL,0,NULL);

buf[1] = CreateThread(NULL,0,thread_B,NULL,0,NULL);

WaitForMultipleObjects(2,buf,TRUE,INFINITE);

CloseHandle(hMutex);

system("pause");

return 0;

}