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labs/lab4_done/Utils/Program.cs

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+using System;
+
+public class Program
+{
+    static void Main(string[] args)
+    {
+        int x, y;
+
+        Console.WriteLine("Введите первое число: ");
+        x = int.Parse(Console.ReadLine());
+        Console.WriteLine("Введите второе число: ");
+        y = int.Parse(Console.ReadLine());
+
+        int greater = Utils.Greater(x, y);
+
+        Console.WriteLine("Большим из чисел {0} и {1} является {2} ", x, y, greater);
+
+        Console.WriteLine("До swap: \t" + x + " " + y);
+        Utils.Swap(ref x, ref y);
+        Console.WriteLine("После swap: \t" + x + " " + y);
+
+        int f;
+        bool ok;
+
+        Console.WriteLine("Number for factorial:");
+        x = int.Parse(Console.ReadLine());
+
+        ok = Utils.Factorial(x, out f);
+
+        if (ok)
+            Console.WriteLine("Factorial(" + x + ") = " + f);
+        else
+            Console.WriteLine("Cannot compute this factorial");
+
+        Console.WriteLine("choose the type of the triangle. type 1 for equilateral else 2: ");
+        int triangleType = int.Parse(Console.ReadLine());
+
+        switch (triangleType)
+        {
+
+        
+        case 1:
+            Console.WriteLine("input side length: ");
+            double a = double.Parse(Console.ReadLine());
+            Console.WriteLine("area = {0}", Operation.TriangleArea(a));
+            break;
+        case 2:
+            Console.WriteLine("input first side length: ");
+            double sideA = double.Parse(Console.ReadLine());
+            Console.WriteLine("input second side length: ");
+            double sideB = double.Parse(Console.ReadLine());
+            Console.WriteLine("input third side length: ");
+            double sideC = double.Parse(Console.ReadLine());
+            Console.WriteLine("area = {0}", Operation.TriangleArea(sideA, sideB, sideC));
+            break;
+        default:
+            Console.WriteLine("invalid triangle type");
+            break;
+        }
+
+
+        Console.WriteLine("input coefficient a: ");
+        int coef_a = int.Parse(Console.ReadLine());
+        Console.WriteLine("input coefficient b: ");
+        int coef_b = int.Parse(Console.ReadLine());
+        Console.WriteLine("input coefficient c: ");
+        int coef_c = int.Parse(Console.ReadLine());
+
+        double x1, x2;
+        int res = Operation.SolveQuadratic(coef_a, coef_b, coef_c, out x1, out x2);
+
+        if (res == 1)
+        {
+            Console.WriteLine("Корни уравнения с коэффициентами a = {0}, b = {1}, c = {2} равны x1 = {3}, x2 = {4}.", coef_a, coef_b, coef_c, x1, x2);
+        }
+        else if (res == 0)
+        {
+            Console.WriteLine("Корень уравнения с коэффициентами a = {0}, b = {1}, c = {2} равны один x1 = x2 = {0}", coef_a, coef_b, coef_c, x1);
+        }
+        else
+        {
+            Console.WriteLine("Корней уравнения с коэффициентами a = {0}, b = {1}, c = {2} нет.", coef_a, coef_b, coef_c);
+        }
+
+    }
+}