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public struct cylinder
{
public
int height;
public
Circle underside;
public cylinder(int n)
{
height = n;
underside = new Circle();
underside.diameter = 10;
}
}
class Program
{
static void Main(string[] args)
{
cylinder myCylinder;
myCylinder.height = 10;
Console.WriteLine("The Cylinder's height={0},usderside={1}",myCylinder.height,myCylinder.underside.diameter*3.1415926);
//使用了可能未赋值的字段“underside
Console.ReadKey();
}
}