请看代码
volatile int tickets=0;
volatile BOOL g_bRun = TRUE;
DWORD WINAPI Fun1Proc(LPVOID lpParameter)
{
char buf[100];
while(g_bRun)
{
if(tickets<10)
{
sprintf(buf,"\nthread1 sell ticket = %d",tickets);
OutputDebugString(buf);
printf(buf);
tickets++;
}
else
Sleep(10);
}
return 0;
}
DWORD WINAPI Fun2Proc(LPVOID lpParameter)
{
char buf[100];
while(g_bRun)
{
if(tickets<10)
{
sprintf(buf,"\nthread2 sell ticket = %d",tickets);
OutputDebugString(buf);
printf(buf);
tickets++;
}
else
Sleep(10);
}
return 0;
}
int main(int argc, char* argv[])
{
CreateThread(NULL,0,Fun1Proc,NULL,0,NULL);
CreateThread(NULL,0,Fun2Proc,NULL,0,NULL);
Sleep(2000);
system("PAUSE");
g_bRun = FALSE;
return 0;
}
理论上输出应该是
thread2 sell ticket = 0
thread1 sell ticket = 1
thread2 sell ticket = 2
thread1 sell ticket = 3
thread2 sell ticket = 4
thread1 sell ticket = 5
thread2 sell ticket = 6
thread1 sell ticket = 7
thread2 sell ticket = 8
thread1 sell ticket = 9
实际上却是这样
thread1 sell ticket = 0
thread1 sell ticket = 0
thread2 sell ticket = 0
thread1 sell ticket = 1
thread2 sell ticket = 2
thread1 sell ticket = 3
thread2 sell ticket = 4
thread1 sell ticket = 5
thread2 sell ticket = 6
thread1 sell ticket = 7
thread2 sell ticket = 8
thread1 sell ticket = 9
最奇怪的地方是
thread1 sell ticket = 0
thread1 sell ticket = 0
请高手解惑
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