这个哪里出错了呢……

#include
using namespace std;
class cube
{
public://使设置的长宽高公共化
void setl(int l)//设置长
{
m_l=l;
}
int getl()//获取长
{
return m_l;
}
void setw(int w)
{
m_w=w;
}
int getw()
{
return m_w;
}
void seth(int h)
{
m_h=h;
}
int geth()
{
return m_h;
}
int calulateS()//获取立方体面积
{
return 2m_lm_w+2m_lm_h+2m_hm_w;
}
int calulateV()//获取立方体体积
{
return m_lm_wm_h;
}
private:
int m_l;
int m_w;
int m_h;
};
int main()
{
cube c1;
c1.setl(10);
c1.setw(20);
c1.seth(5);
cout<<calulateS()<<" "<<calulateV();
}

cout<<calulateS()<<" "<<calulateV();这里改成：cout<<c1.calulateS()<<" "<<c1.calulateV()<< endl;

#include <iostream> 
using namespace std;

class cube
{
public://使设置的长宽高公共化
    void setl(int l)//设置长
    {
        m_l=l;
    }
    int getl()//获取长
    {
        return m_l;
    }
    void setw(int w)
    {
        m_w=w;
    }
    int getw()
    {
        return m_w;
    }
    void seth(int h)
    {
        m_h=h;
    }
    int geth()
    {
        return m_h;
    }
    int calulateS()//获取立方体面积
    {
        return 2*m_l*m_w+2*m_l*m_h+2*m_h*m_w;
    }
    int calulateV()//获取立方体体积
    {
        return m_l*m_w*m_h;
    }
private:
    int m_l;
    int m_w;
    int m_h;
};
int main()
{
    cube c1;
    c1.setl(10);
    c1.setw(20);
    c1.seth(5);
    cout<<c1.calulateS()<<" "<<c1.calulateV()<< endl;
    return 0;
}

#include什么呢？去掉#include