// According to the decibel (10~100db) at which the cat's cries, the mouse runs away at a corresponding speed（10~100db）
// escaping velocity (int: m/s) v = ((db/40) + 1) * 4
public class TestCatCall { public static void Main() {
Cat c1 = new Cat("big yellow cat");
Cat c2 = new Cat("Kitten");
Mouse m1 = new Mouse("guinea pig");
Mouse m2 = new Mouse("big squirrel");
c2.Calling += m1.Escape; //★
c2.Calling += m2.Escape; //★
int db;
do {
Console.WriteLine("Please input an integer between 10 and 100: (illegal data to exit)");
Int32.TryParse(Console.ReadLine(), out db); if(db < 10 || db > 100) break;
c1.Call(db); //★
c2.Call(db); //★
} while (true);
} // END of Main method
}
class Mouse {
public string Name { get; set; }
private int EscV; //Escaping velocity (m/s) public Mouse(string name) { Name = name; }
public void Escape(object sender, Cat.SoundDbEventArgs e) {
//★
EscV = ((e.Db / 40) + 1) * 4;
Console.WriteLine("The mouse {0} is running away at a speed of {1} m/s!", Name, EscV);
}
}
【Task】Provide the code for the Cat class to meet the required functions.
【Technical Requirements】
① Use the event model based on delegate;
② Publishers need to pass parameters to subscribers.
One of the runtime screenshot is given below.
- Anytime The Cat Cry Miao And The Mouse Ran Away Immediately According To The Decibel 10 100db At Which 1 (11.53 KiB) Viewed 30 times