Write a class having two private variables defining a rectangle, and a member function which will return the area of the rectangle.

the type of variables is int.

The main function is provided, you only need to complete the Rectangle Class:

int main(){
    int length,width;
    cin>> length>>width;
    Rectangle rect;
    rect.setLength(length);
    rect.setWidth(width);
    cout<<rect.returnArea()<<endl;
}