static void Main(string[] args)
{
Console.WriteLine("**** Fun with conversions ****");
//make a rectangle
Rectangle rect = new Rectangle(15, 4);
Console.WriteLine(rect.ToString());
rect.Draw();
Console.WriteLine();
//convert r into a square
Square squ = (Square)rect;
Console.WriteLine(squ.ToString());
squ.Draw();
Console.WriteLine();
DrawSquare((Square)rect);
Console.WriteLine("==========Implicit=====");
Square s3 = new Square(15);
//Attempt to make implicit cast
Rectangle rect2 = (Rectangle)s3;
Console.WriteLine(rect2.ToString());
rect2.Draw();
Console.Read();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Conversions *****\n");
// Make a Rectangle.
Rectangle r = new Rectangle(15, 4);
Console.WriteLine(r.ToString());
r.Draw();
Console.WriteLine();
// Convert r into a Square,
// based on the height of the Rectangle.
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
Console.WriteLine();
// Convert Rectangle to Square to invoke method.
Rectangle rect = new Rectangle(10, 5);
DrawSquare((Square)rect);
Console.WriteLine();
// Converting a System.Int32 to a Square.
Square sq2 = (Square)90;
Console.WriteLine("sq2 = {0}", sq2);
// Converting a Square to a System.Int32.
int side = (int)sq2;
Console.WriteLine("Side length of sq2 = {0}", side);
Console.WriteLine();
// Implicit cast OK!
Square s3;
s3.Length = 7;
Rectangle rect2 = s3;
Console.WriteLine("rect2 = {0}", rect2);
DrawSquare(s3);
Console.WriteLine();
// Explicit cast syntax still OK!
Square s4;
s4.Length = 3;
Rectangle rect3 = (Rectangle)s4;
Console.WriteLine("rect3 = {0}", rect3);
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Conversions *****\n");
int a = 123;
long b = a; // implicit conversion (no loss of data)
Console.WriteLine(b);
int c = (int)b; // explicit conversion (potential loss of data)
Console.WriteLine(c);
// Make a Rectangle.
Rectangle r = new Rectangle(15, 4);
Console.WriteLine(r.ToString());
r.Draw();
Console.WriteLine();
// Convert r into a Square,
// based on the height of the Rectangle.
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
Console.WriteLine();
// Convert Rectangle to Square to invoke method.
Rectangle rect = new Rectangle(10, 5);
DrawSquare((Square)rect);
Console.WriteLine();
// Converting an int to a Square.
Square sq2 = (Square)90;
Console.WriteLine("sq2 = {0}", sq2);
// Converting a Square to a int.
int side = (int)sq2;
Console.WriteLine("Side length of sq2 = {0}", side);
Console.WriteLine();
Square s3 = new Square {
Length = 83
};
// Attempt to make an implicit cast?
Rectangle rect2 = s3;
Console.WriteLine(rect2);
Console.ReadLine();
}
static void Main(string[] args)
{
Rectangle r = new Rectangle(15, 4);
Console.WriteLine(r.ToString());
r.Draw();
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
Console.Read();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Conversions *****\n");
Rectangle r = new Rectangle(15, 4);
Console.WriteLine(r.ToString());
r.Draw();
Console.WriteLine();
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
Console.WriteLine();
Rectangle rect = new Rectangle(10, 5);
DrawSquare((Square)rect);
Console.WriteLine();
Square sq2 = (Square)90;
Console.WriteLine($"sq2 = {sq2}");
Console.WriteLine();
int side = (int)sq2;
Console.WriteLine($"Side length of sq2 = {side}");
Console.WriteLine();
Square s3 = new Square {
Length = 7
};
Rectangle rect2 = s3;
Console.WriteLine($"rect2 = {rect2}");
Console.WriteLine();
Square s4 = new Square {
Length = 3
};
Rectangle rect3 = (Rectangle)s4;
Console.WriteLine($"rect3 = {rect3}");
Console.WriteLine();
Console.ReadLine();
}
static void Main(string[] args)
{
var rectangle = new Rectangle(15, 4);
rectangle.DoNothing(5);
Console.WriteLine();
Console.WriteLine(rectangle.ToString());
rectangle.Draw();
Console.WriteLine();
Square square = (Square)rectangle;
Console.WriteLine(square.ToString());
square.Draw();
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("***** Fun with Conversions *****\n");
// Make a Rectangle.
Rectangle r = new Rectangle(4, 10);
Console.WriteLine(r.ToString());
r.Draw();
Console.WriteLine();
// Convert r into a Square,
// based on the height of the Rectangle.
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
// Converting an int to a Square.
Square sq2 = (Square)90;
Console.WriteLine("sq2 = {0}", sq2);
// Converting a Square to an int.
int side = (int)sq2;
Console.WriteLine("Side length of sq2 = {0}", side);
Console.ReadLine();
// Implicit cast OK!
Square s3 = new Square {
Length = 7
};
Rectangle rect2 = s3;
Console.WriteLine("rect2 = {0}", rect2);
// Explicit cast syntax still OK!
Square s4 = new Square {
Length = 3
};
Rectangle rect3 = (Rectangle)s4;
Console.WriteLine("rect3 = {0}", rect3);
Console.ReadLine();
}
static void Main(string[] args)
{
// Make a Rectangle
Rectangle r = new Rectangle(15, 4);
// Convert r into a Square based on the height of the Rectangle.
Square s = (Square)r;
// Convert Rectangle to Square to invoke method.
Rectangle rect = new Rectangle(10, 5);
// Converting an int to a Square.
Square sq2 = (Square)90;
// Converting a Square to an int.
int side = (int)sq2;
// Make an implicit cast.
Square s3 = new Square {
Length = 7
};
Rectangle rect2 = s3;
// Explicit cast syntax is redundant, but still allowed.
Square s4 = new Square {
Length = 3
};
Rectangle rect3 = (Rectangle)s4;
Console.WriteLine("***** Fun with Conversions *****\n");
Console.WriteLine(r.ToString());
r.Draw();
Console.WriteLine();
Console.WriteLine(s.ToString());
s.Draw();
Console.WriteLine();
DrawSquare((Square)rect);
Console.WriteLine();
Console.WriteLine("sq2 = {0}", sq2);
Console.WriteLine("Side length of sq2 = {0}", side);
Console.WriteLine("rect2 = {0}", rect2);
Console.WriteLine("rect3 = {0}", rect3);
Console.ReadLine();
}
public static void Main(string[] args)
{
// playing with custom type conversion
Rectangle rect = new Rectangle(15, 4);
Console.WriteLine(rect.ToString());
rect.Draw();
Console.WriteLine();
// convert rect to Square... no idea why >.>
Square s = (Square)rect;
Console.WriteLine(s.ToString());
s.Draw();
Rectangle rect2 = new Rectangle(10, 5);
DrawSquare((Square)rect2);
// casting squares and ints
Square sq2 = (Square)90;
Console.WriteLine("sq2: {0}", sq2);
int side = (int)sq2;
Console.WriteLine("Side length of sq2 is: {0}", side);
// playing with implicit conversion
Square s3 = new Square(7);
s3.Draw();
Rectangle rect3 = s3;
rect3.Draw();
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("******Fun with Conversions******");
Rectangle r = new Rectangle(15, 4);
Console.WriteLine(r.ToString());
r.Draw();
Console.WriteLine();
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
Rectangle rt = new Rectangle(5, 8);
DrawSquare((Square)rt);
//Console.ReadLine();
int length = 2;
Square si = (Square)length;
DrawSquare(si);
Square its = new Square(3);
Console.WriteLine((int)its);
Console.WriteLine("********隐式类型转换*********");
Square iss = new Square(2);
Rectangle rectangle = iss;
rectangle.Draw();
Console.ReadLine();
}
static void Main(string[] args)
{
Console.WriteLine("****** Fun with Conversion ******\n");
Rectangle r = new Rectangle(15, 4);
Console.WriteLine(r.ToString());
r.Draw();
Console.WriteLine();
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
Console.ReadLine();
Square sq2 = (Square)90;
Console.WriteLine("sq2 = {0}", sq2);
int side = (int)sq2;
Console.WriteLine("Side length of sq2 = {0}", side);
Square s3 = new Square {
Lenght = 7
};
Rectangle rect2 = s3;
Console.WriteLine("rect2 = {0}", rect2);
Square s4 = new Square {
Lenght = 3
};
Rectangle rect3 = (Rectangle)s4;
Console.WriteLine("rect3 = {0}", rect3);
}
static void Main(string[] args)
{
Console.WriteLine("**** Fun with conversions ****");
Rectangle r = new Rectangle(14, 5);
Console.WriteLine(r.ToString());
r.Draw();
Square s = (Square)r;
Console.WriteLine(s.ToString());
s.Draw();
DrawSquare((Square)r);
Square s2 = (Square)90;
Console.WriteLine("s2 = {0}", s2);
s2.Draw();
int side = (int)s2;
Console.WriteLine("Length of square side: {0}", side);
Square s3 = new Square(83);
Rectangle r2 = s3;
Console.WriteLine("r2: {0}", r2.ToString());
Square s4 = new Square(7);
Rectangle r3 = (Rectangle)s4;
Console.WriteLine("r3: {0}", r3);
Console.ReadLine();
}
static void DrawSquare(Square sq)
{
Console.WriteLine(sq.ToString());
sq.Draw();
}
// This method requires a Square type.
static void DrawSquare(Square sq)
{
Console.WriteLine(sq.ToString());
sq.Draw();
}
