while(1)
     {
         if((hongwaizuo==0)&&(hongwaiyou!=0))
         {
              delayxms(2);
              if((hongwaizuo==0)&&(hongwaiyou!=0))
              {
            
              a=40;
              delayxms(30);
              a=46;
              delayxms(30);
            
              }
        while(hongwaizuo!=0)
          {
                  delayxms(30);
                a=33;
              };   
          }
这段程序里面的a=40，a=46，只要if中的条件满足就会一直循环，怎么让其循环一次就停？？？？

一直循环吧