static void Main(string[] args)
{
GetGreeting del = GoodMorning;
UseOperation delegat = Add;
if (DateTime.Now.Hour < 12)
{
del = GoodMorning;
}
else if (DateTime.Now.Hour >= 12 && DateTime.Now.Hour < 18)
{
del = GoodDay;
}
else if (DateTime.Now.Hour >= 18 && DateTime.Now.Hour < 22)
{
del = GoodEvening;
}
else if (DateTime.Now.Hour >= 22 || DateTime.Now.Hour < 11)
{
del = GoodEvening;
}
del();
Console.WriteLine(" Введите числа для расчёта");
Console.Write(" a - ");
int a = Convert.ToInt32(Console.ReadLine());
Console.Write(" b - ");
int b = Convert.ToInt32(Console.ReadLine());
Console.Write(" Какую операцию провернуть (+,-,*,/) - ");
string operacia = Convert.ToString(Console.ReadLine());
if (operacia == "+")
{
delegat = Add;
}
else if (operacia == "-")
{
delegat = Subtract;
}
else if (operacia == "*")
{
delegat = Multiply;
}
else if (operacia == "/")
{
delegat = IntegerDevide;
}
delegat(a, b);
}
private static void Task5()
{
//Task 5
Console.WriteLine("Enter command code");
Console.WriteLine("1.Sum");
Console.WriteLine("2.Minus");
Console.WriteLine("3.Mult");
Console.WriteLine("4.Div");
Console.WriteLine("Enter X");
var userX = int.Parse(Console.ReadLine());
Console.WriteLine("Enter Y");
var userY = int.Parse(Console.ReadLine());
var input = Console.ReadLine();
var code = int.Parse(input);
UseOperation useOperation = (x, y) =>
{
switch (code)
{
case 0:
return(Sum(x, y));
case 1:
return(Minus(x, y));
case 2:
return(Mult(x, y));
case 3:
return(Div(x, y));
}
throw new NotSupportedException();
};
useOperation.Invoke(userX, userY);
}
