问答题 请使用VC6或使用【答题】菜单打开考生文件夹proj2下的工程proj2，其中定义了vehicle类，并派生出motorcar类和bicycle类。然后以motorcar和bicycle作为基类，再派生出motocycle类。要求将vehicle作为虚基类，避免二义性问题。请在横线处填写适当的代码并删除横线，以实现上述类定义。此程序的正确输出结果应为：Avehicleisrunning!Avehiclehasstopped!Abicycleisrunning!Abicyclehasstopped!Amotorcarisnmning!Amotocycleisrunning!注意：只在横线处填写适当的代码，不要改动程序中的其他内容，也不要删除或移动“／／****found****”。#include＜iostream．h＞classvehicle{private：intMaxSpeed；intWeight；public：vehicle()：MaxSpeed(0)，Weight(0){}vehicle(intmax_speed，intweight)：MaxSpeed(max_speed)，Weight(weight){}／／**********found**********________Run(){cout＜＜"AvehicleiSrunning!"＜＜end1；}／／**********found**********________Stop(){cout＜＜"Avehiclehasstopped!"＜＜end1；}}；classbicycle：virtualpublicvehicle{private：intHeight；public：bicycle()：Height(0){}bicycle(intmax_speed，intweight，intheight)：vehicle(max_speed，weight)，Height(height){}；voidRun(){cout＜＜"Abicycleisrunning!"＜＜end1；}voidStop(){cout＜＜”Abicyclehasstopped!”＜＜end1；))；classmotorcar：virtualpublicvehicle{private：intSeatNum；public：motorcar()：SeatNum(0){}motorcar(intmaxspeed，intweight，intseat_num)／／**********found**********：________{}voidRun(){cout＜＜"Amotorcarisrunning!"＜＜end1；}voidStop(){cout＜＜"Amotorcarhasstopped!"＜＜end1；}}；／／**********found**********classmOtOrcycle：________{public：motorcycle(){}motorcycle(intmax_speed，intweight，intheight，intseet_num)：bicycle(max_speed，weight，height)，motorcar(max_speed，weight，seet_num){}；~motorcycle(){}；voidRun(){cout＜＜"Amotorcycleisrunning!"＜＜end1；}voidStop(){cout＜＜"AmotOrcyclehasstopped!"＜＜end1；}}；intmain(){vehicle*ptr；vehiclea；bicycleb；motorcarc；motorcycled；a．Run()；a．Stop()；b．Run()；b．Stop()；ptr=&c；ptr-＞Run()；ptr=&d；ptr-＞Run()，return0；}