win32 Console App的多线程小例子

/* 
这是一个多线程编程的简单实例。 
首先，新建一个win32 Console App， 
其次，确认如下设置： 
      project->property->Configuration Properties 
      ->C/C++->Code Generation->Runtime Library->Multi-thread DLL(/MD) 
*/  
    #include  
    #include     
    #include     
    #include     
        
    typedef struct thread_param{    
        int threadno;    
        char str[20];    
    }T_PARAM;    
        
    void * myFunc(T_PARAM *ww);    
        
    int main(int argc,char *argv[])    
    {    
        int i = 0;    
        HANDLE  h_thread[20];    
        T_PARAM *myparas;    
        T_PARAM *mypara;    
        char str[]="test";    
        
        myparas = (T_PARAM *)malloc(sizeof(T_PARAM)*20);    
        if(myparas == NULL)    
        {    
            printf("Malloc Error!\n");    
            return -1;    
        }    
        memset(myparas,0,sizeof(T_PARAM)*20);    
        
        for(i = 0;i<20;i++)    
        {    
            mypara = myparas + i;    
            mypara->threadno = i;    
            strcpy(mypara->str,str);    
        
            h_thread[i] = CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)myFunc,(LPVOID)mypara,0,NULL);    
            if(h_thread[i] == NULL)    
            {    
                printf("Thread No[%d] Start Failed!\n",i);    
                return -2;    
            }    
        }    
          
        for(i = 0;i<20;i++)    
        {    
            WaitForSingleObject(h_thread[i],INFINITE);    
            CloseHandle(h_thread[i]);    
        }    
          
        free(myparas);    
        printf("Excl Suc!!!\n");    
        return 0;    
    }    
        
    void * myFunc(T_PARAM *ww)    
    {    
        printf("%d\n",ww->threadno);  
        return 0;    
    }