C++类静态数组初始化问题

cin>>l[i];
之后作为传参传递给类

//谁又能单用a[i]存三个数了，自然是三个数组
#include<iostream>
using namespace std;
const short COUNT=3;
class rectangle
{
private:
    float length;
    float width;
    float height;
public:
    void Set(float l,float w,float h){length=l;width=w;height=h;}
    float GetVolume(){return length*width*height;}
};
int main()
{
    float l[COUNT],w[COUNT],h[COUNT];
    rectangle MyRect[COUNT];
    for(short i=0;i<COUNT;i++)
    {
        cout<<"请输入第"<<i+1<<"个长方体的数据:\n";
        cout<<"长：";cin>>l[i];
        cout<<"宽：";cin>>w[i];
        cout<<"高：";cin>>h[i];
        MyRect[i].Set(l[i],w[i],h[i]);
    }
    for(i=0;i<COUNT;i++)
    {
        cout<<"第"<<i+1<<"个长方体体积: "<<MyRect[i].GetVolume()<<endl;
    }
    return 0;
}