2.6

#include<iostream>using namespace std;class V{private:    int length;    int width;    int hight;public:    void shuru();    void tiji();};void V::shuru(){    cin>>length;    cin>>width;    cin>>hight;}void V::tiji(){    int M;    M = ((length)*(width)*(hight));    cout<<M<<endl;}int main(){    V t1, t2,t3;    t1.shuru();    t1.tiji();    t2.shuru();    t2.tiji();    t3.shuru();    t3.tiji();    return 0;}