using System;

public class Program

{

    private static int iN, iZ, mat, u;

    private static double l, iB, A, dUz, dU;

    private static string tmp;

    private static bool loop;

    public static void Main()

    {

        loop = true;

        while(loop) {

            tmp = "";

            l = 0;

            iB = 0;

            A = 0;

            dUz = 0;

            dU = 0;

            iN = 0;

            iZ = 0;

            mat = 0;

            u = 0;

​

            Console.WriteLine("=================================================");

            Console.WriteLine("||           Leitungsdimensionierer            ||");

            Console.WriteLine("=================================================");

            Console.WriteLine("||  Verlegeart: B1, Umgebungstemperatur: 30°C  ||");

            Console.WriteLine("=================================================");

​

            //Spannung ---

​

            Console.WriteLine("Spannung: [V]");

            tmp = Console.ReadLine();

            try {

                u = Convert.ToInt32(tmp);

            } catch {

                u = -1;

            }

            if(u < 0) {

                Console.WriteLine("Nur positive Zahlen möglich!");

            } else {

​

                //Leiterlänge ---

​

                Console.WriteLine("Leiterlänge: [m]");

                tmp = Console.ReadLine();

                try {

                    l= Convert.ToDouble(tmp);

                } catch {

                    l = -1;

                }

                if(l < 0) {

                    Console.WriteLine("Nur positive Zahlen möglich!");

                } else {

​

                    //Leitermaterial ---

​

                    Console.WriteLine("Leitermaterial: [Zahl vor Material]");

                    Console.WriteLine("- 1 - Kupfer");

                    Console.WriteLine("- 2 - Aluminium");

                    Console.WriteLine("- 3 - Silber");

​

                    tmp = Console.ReadLine();

                    try {

                        mat = Convert.ToInt32(tmp);

                    } catch {

                        mat = -1;

                    }

                    if(mat < 0 || mat > 3) {

                        Console.WriteLine("Nur 1 , 2 oder 3 möglich!");

                    } else {

                        switch(mat) {

                            case 1: mat = 56; break;

                            case 2: mat = 36; break;

                            case 3: mat = 60; break;

                        }

​

                        //Bemessungsstrom ---

​

                        Console.WriteLine("Bemessungsstrom: [A]");

                        tmp = Console.ReadLine();

                        try {

                            iB = Convert.ToDouble(tmp);

                        } catch {

                            iB = -1;

                        }

                        if(iB < 0) { 

                            Console.WriteLine("Nur positive Zahlen eingeben!");

                        } else {

​

                            //BERECHNEN ---

​

                            if(iB > 63) {

                                Console.WriteLine("Bemessungsstrom zu hoch! (max. 63A)");

                            } else {

​

                                if(iB <= 4) { iN = 4; }

                                else if(iB > 4 && iB <= 6) { iN = 6; }

                                else if(iB > 6 && iB <= 10) { iN = 10; }

                                else if(iB > 10 && iB <= 13) { iN = 13; }

                                else if(iB > 13 && iB <= 16) { iN = 16; }

                                else if(iB > 16 && iB <= 20) { iN = 20; }

                                else if(iB > 20 && iB <= 25) { iN = 25; }

                                else if(iB > 25 && iB <= 32) { iN = 32; }

                                else if(iB > 32 && iB <= 35) { iN = 35; }

                                else if(iB > 35 && iB <= 40) { iN = 40; }

                                else if(iB > 40 && iB <= 50) { iN = 50; }

                                else if(iB > 50 && iB <= 63) { iN = 63; }

​

                                A = 0.5;

​

                                while(true) {

                                    dUz = u * 0.03;

                                    dU = (2 * iN * l) / (mat * A);

​

                                    if(dU > dUz && A > 0) {

                                        if(A == 0.5) { A = 1; }

                                        else if(A == 1) { A = 1.5; }

                                        else if(A == 1.5) { A = 2.5; }

                                        else if(A == 2.5) { A = 4; }

                                        else if(A == 4) { A = 6; }

                                        else if(A == 6) { A = 10; }

                                        else if(A == 10) { A = 16; }

                                        else if(A == 16) { A = 25; }

                                        else if(A == 25) { A = 35; }

                                        else if(A == 35) { A = 50; }

                                        else { A = -1; }

                                    } else {

                                        break;

                                    }

                                }

​

                                Console.WriteLine("Benötigter Leiterquerschnitt: " + A + "mm²");

                            }

                        }

                    }

                }

            }

            Console.WriteLine("");

            Console.WriteLine("ENTER drücken um von vorne zu beginnen. (Q und ENTER zum beenden) ");

            tmp = Console.ReadLine();

            if(tmp == "Q" || tmp == "q") {

                break;

            }

        }

        Console.WriteLine("ENDE");

    }

}