四位数码管显示四位数num=1234,千位数qian=num@01。百位数bai=num@%10,2。十位数shi=num%10,3。个位数ge=num%10。百位和十位公式不一定是这,比如bai=num%1000/100。公式里面斜杠的方向不对。作业使用数码管显示函数四位数19**,**是自己的学号。数码管使用四位共阴数码管。也可以试试使用四位共阳数码管。把程序贴出来和仿真电路截图

ercent increase in the price of ice cream and a 3 percent decrease in the quantity of ice cream sold. The revenue received by ice cream suppliers will ________ because the demand for ice cream is ________. （）A．decrease; price inelastic减少;价格无弹性B．increase; price inelastic增加;价格无弹性C．increase; price elastic增加;价格弹性D．decrease; price elastic减少;价格弹性