编写一个程序,输入正方体的长宽高l,w,h。求体积及三个面x*y,x*z,y...答:include<iostream> using namespace std;float mianji(float x,float y){ return x*y;} float tiji(float x,float y,float z){ return x*y*z;} int main(){ int l,w,h;cout<<"请依次输入长、宽、高:"<<endl;cout<<"l=";cin>>l;cout<<"w=";cin>>w;cout<<"h=";cin>>h...