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#include 
   
    #include 
    
     #include 
     
      #include 
      
       int scanKeyboard(){    int in;    struct termios new_settings;    struct termios stored_settings;    tcgetattr(0,&stored_settings);    new_settings = stored_settings;    new_settings.c_lflag &= (~ICANON);    new_settings.c_cc[VTIME] = 0;    tcgetattr(0,&stored_settings);    new_settings.c_cc[VMIN] = 1;    tcsetattr(0,TCSANOW,&new_settings);         in = getchar();         tcsetattr(0,TCSANOW,&stored_settings);    return in;}int stop = 0;int stop_assist = 0;void * pthread(void *arg){    while(1){        if(scanKeyboard() == 32){            stop_assist++;            if(stop_assist%2 == 1){                stop = 1;            }else{                stop = 0;            }        }    }}int main(){    pthread_t thread_id;        if ((pthread_create(&thread_id, NULL, pthread, NULL)) == -1){        printf("create error!\n");        return 1;    }        while(stop){        sleep(1);    }    return 0;}
      
     
    
   

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