static void SwapRef(ref ArrEl first, ref ArrEl second)
{
int temp = 0;
temp = first.Val;
first.Val = second.Val;
second.Val = temp;
}
//индексатор2
public ArrEl this[string info]
{
get
{
ArrEl element = null;
foreach (var el in Data)
{
if (el.Name == info)
{
element = el;
break;
}
}
return(element);
}
}
public Arr()
{
Data = new ArrEl[Constants.ArraySize];
}
static void Main(string[] args)
{
Arr MyArray = new Arr();
ArrEl first = new ArrEl {
Name = "first_param", Val = 678
};
MyArray[0] = first;
ArrEl second = new ArrEl {
Name = "second_param", Val = 78
};
MyArray[1] = second;
ArrEl third = new ArrEl {
Name = "third_param", Val = 89
};
MyArray[2] = third;
ArrEl forth = new ArrEl {
Name = "fourth_param", Val = 333
};
MyArray[3] = forth;
ArrEl fifth = new ArrEl {
Name = "fifth_param", Val = 689
};
MyArray[4] = fifth;
//task1
Console.WriteLine(MyArray[3]); // output: forth_param, 333
// Console.WriteLine(MyArray[78]); //exception
Console.WriteLine(MyArray["first_param"]);
Console.WriteLine(MyArray["hj"]); //null
//task2
Console.WriteLine("- - - - - - - - - - - -");
Console.WriteLine(Addition(first.Val, MyArray[1].Val, MyArray[2].Val, MyArray[3].Val, MyArray[4].Val));
int[] IntArray = { 2, 5, 7, 8 };
Console.WriteLine(Addition(IntArray));
//task 3
Console.WriteLine("- - - - - - - - - - - -");
Console.WriteLine("Before swap:\n");
for (int i = 0; i < Constants.ArraySize; i++)
{
Console.WriteLine(MyArray[i]);
}
SwapRef(ref first, ref second);
Console.WriteLine("");
Console.WriteLine("After swap:\n");
for (int i = 0; i < Constants.ArraySize; i++)
{
Console.WriteLine(MyArray[i]);
}
//task 4
Console.WriteLine("- - - - - - - - - - - -");
//ввод координат
Console.WriteLine("Пожалуйста, вводите координаты только по/против часовой стрелки, иначе все поломается(( ");
Console.Write("x1: ");
double x1 = Convert.ToInt32(Console.ReadLine());
Console.Write("y1: ");
double y1 = Convert.ToInt32(Console.ReadLine());
Console.Write("x2: ");
double x2 = Convert.ToInt32(Console.ReadLine());
Console.Write("y2: ");
double y2 = Convert.ToInt32(Console.ReadLine());
Console.Write("x3: ");
double x3 = Convert.ToInt32(Console.ReadLine());
Console.Write("y3: ");
double y3 = Convert.ToInt32(Console.ReadLine());
Console.Write("x4: ");
double x4 = Convert.ToInt32(Console.ReadLine());
Console.Write("y4: ");
double y4 = Convert.ToInt32(Console.ReadLine());
Console.Write("Perimeter \n");
Figure.Find_perim(x1, y1, x2, y2, x3, y3, x4, y4, out double perim, out bool perim_flag);
if (perim_flag)
{
Console.WriteLine(perim);
}
else
{
Console.WriteLine("there's something wrong... check whether it is a quadrangle at all");
}
Console.Write("Area ");
Figure.Find_area(x1, y1, x2, y2, x3, y3, x4, y4, out double area, out bool area_flag);
if (area_flag)
{
Console.WriteLine(area);
}
else
{
Console.WriteLine("there's something wrong... check whether it is a quadrangle at all");
}
}
