C# problem

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Okrajnost_vpisana_v_pravoagalnik_s_radion_0._0._5
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Please put an input for your first value\n !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!Note, Say \"No\" if you don't have an input for a!!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!\"Any other word would have critical damage and the!");
            Console.WriteLine("!!!Program will shut down emideatly!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string a;
            a = Console.ReadLine();
            if (a == "No")
            {
                Console.WriteLine("You don't have an input for a:");
            }
            else if (Convert.ToInt32(a) <= 127)
            {
                if (Convert.ToInt32(a) > 127)
                {
                    Console.WriteLine("Exception you cannot put a number above 127");
                }
                else
                {
                    Console.WriteLine("Your input for a is:" + a);
                }
            }
            Console.WriteLine("Please put an input for your Second value\n !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!Note, Say \"No\" if you don't have an input for a!!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!\"Any other word would have critical damage and the!");
            Console.WriteLine("!!!Program will shut down emideatly!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string b;
            b = Console.ReadLine();
            if (b == "No")
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("Error!!! your assigment doesn't have a salution please refer to a diffrent software\n !!Code 1245!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            }
            if (Convert.ToInt32(b) <= 127)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!Your Input for b is!!!");
                Console.WriteLine("!!!       {0}         !!!", b);
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!");
            }
            byte c = 5;
            int ABC;
            ABC = Convert.ToInt32(a) & Convert.ToInt32(b);
            int CountingMethod1 = (Convert.ToInt32(a) * Convert.ToInt32(a)) + (Convert.ToInt32(b) * Convert.ToInt32(b));
            object Salution = (CountingMethod1 <= c);
            if (ABC >= 0)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!You have defined your values \"(a={0},b={1},c={2})\",Now we are !!!!!", a, b, c);
                Console.WriteLine("!!!going to calculate if the point o is in the circle K with the   !!!!!");
                Console.WriteLine("!!!                               Formula:A2*B2=C2                 !!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!! We are Calculating your salution!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!! {0}!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!", Salution);
            }
            else if (CountingMethod1 <= c)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!The point that your calculating is inside the circle ((0.0,5))!!!!!!");
                Console.Beep();
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!Your point is ((0.0,{0}))!!!!!!!!!!!!!!!!!!!!", CountingMethod1);
                Console.WriteLine("!!!Thank you for using our circle point calculator modify the range of!!");
                Console.WriteLine("!!!C to increase the range of the circle , Created by Kristifor Milchev!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(v0.01)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            }
            else if (CountingMethod1 >= c)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!The point that your calculating is outside the circle ((0.0,5))!!!!!!");
                Console.Beep();
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!Your point is (({0},5))!!!!!!!!!!!!!!!!!!!!", CountingMethod1);
                Console.WriteLine("!!!Thank you for using our circle point calculator modify the range of!!");
                Console.WriteLine("!!!C to increase the range of the circle , Created by Kristifor Milchev!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!(v0.01)!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            }
            start:
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!Input value for a of the cube!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string aP = Console.ReadLine();
            if(aP == "No")
            {
                Console.WriteLine("!!!!!!!!!!!!!");
                Console.WriteLine("!!!Proceeed!!");
                Console.WriteLine("!!!!!!!!!!!!!");
            }
            else if(Convert.ToInt32(aP) >=0)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!Your input!!!!");
                Console.WriteLine("!!For ab is {0}!!!",Convert.ToInt32(aP));
                Console.WriteLine("!!!!!!!!!!!!!!!!");
            }
            else if (Convert.ToInt32(aP) <= 0)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!Your input!!!!");
                Console.WriteLine("!!For ab is {0}!!!", Convert.ToInt32(aP));
                Console.WriteLine("!!!!!!!!!!!!!!!!");
            }
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!Input value for b of the cube!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string bP = Console.ReadLine();
            if(bP == "No")
            {
                Console.WriteLine("!!!!!!!!!!!!!");
                Console.WriteLine("!!!Proceeed!!");
                Console.WriteLine("!!!!!!!!!!!!!");
            }
            else if(Convert.ToInt32(bP)>=1||Convert.ToInt32(bP)<=0)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!Your input!!!!");
                Console.WriteLine("!!For bc is {0}!!!!", Convert.ToInt32(bP));
                Console.WriteLine("!!!!!!!!!!!!!!!!");
            }
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!Input value for c of the cube!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string cP = Console.ReadLine();
            if(cP == "No")
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!Error you cannot proceed!!");
                Console.WriteLine("!!!you have to know atleast!!");
                Console.WriteLine("!!!Two sides of the cude in!!");
                Console.WriteLine("!!!Order to proceed!!!!!!!!!!");
                Console.WriteLine("!!Returning to the cube start!");
                Console.WriteLine("??????????????????????????????");
                if(aP=="No"&&bP=="No"&&cP=="No")
                {
                    goto start;
                }
            }
            else if(Convert.ToInt32(cP)>=1||Convert.ToInt32(cP)<=0)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!Your input!!!!");
                Console.WriteLine("!!For CD is {0}!!!!", Convert.ToInt32(cP));
                Console.WriteLine("!!!!!!!!!!!!!!!!");
            }
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!Input value for d of the cube!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string dP = Console.ReadLine();
            if(dP == "No")
            {
                Console.WriteLine("!!!!!!!!!!!!!");
                Console.WriteLine("!!!Proceeed!!");
                Console.WriteLine("!!!!!!!!!!!!!");
                if(aP=="No"&&bP=="No"&&cP=="No"&&dP=="No")
                {
                    Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                    Console.WriteLine("!!!Error you cannot proceed!!");
                    Console.WriteLine("!!!you have to know atleast!!");
                    Console.WriteLine("!!!Two sides of the cude in!!");
                    Console.WriteLine("!!!Order to proceed!!!!!!!!!!");
                    Console.WriteLine("!!Returning to the cube start!");
                    Console.WriteLine("??????????????????????????????");
                    goto start;
                }
            }
            else if(Convert.ToInt32(dP)>=1||Convert.ToInt32(dP)<=1)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!Your input!!!!");
                Console.WriteLine("!!For AD is {0}!!!!", Convert.ToInt32(dP));
                Console.WriteLine("!!!!!!!!!!!!!!!!");
            }
            bool abcd;
            abcd = (Convert.ToInt32(aP) <= 0 || Convert.ToInt32(aP) >= 1) || (Convert.ToInt32(bP) <= 1 || Convert.ToInt32(bP) >= 1) ||
            (Convert.ToInt32(cP) >= 1 || (Convert.ToInt32(cP) <= 0)) || (Convert.ToInt32(dP) >= 1 || Convert.ToInt32(dP) <= 0);
            if(abcd == true)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!Your cube ABCD is with sizes equals to!!!!!!!");
                Console.WriteLine("!!!AB = {0} BC = {1} BC = {2} CD = {3} !!!!!!!!!!!!!!!!!!!!!",aP,bP,cP,dP);
                Console.WriteLine("!!!You know the size of the cube now your !!!!!!");
                Console.WriteLine("!!!to proceed with the program!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            }
            int abc;
            abc = 90;
            int adc;
            adc = 90;
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!You have to put input for the corner BCD note !!!");
            Console.WriteLine("!!!If you don't have an input say \"No\" and go !!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!--Futher--!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string bcd;
            bcd = Console.ReadLine();
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!You have to put input for the corner CDA note !!!");
            Console.WriteLine("!!!If you don't have an input say \"No\" and go !!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!--Futher--!!!!!!!!!!!!!!!!!!!!!!!!");
            Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            string cda;
            cda = Console.ReadLine();
            if(Convert.ToInt32(bcd) >= 1)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("Your input for the corner BCD is");
                Console.WriteLine("!!!!!!!!!!!!!!{0}!!!!!!!!!!!!!!!!",bcd);
            }
            else if(bcd=="No")
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!!Proceed!!!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!");
            }
            if(Convert.ToInt32(cda)>=1)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("Your input for the corner CDA is");
                Console.WriteLine("!!!!!!!!!!!!!!{0}!!!!!!!!!!!!!!!!", cda);
            }
            else if(cda=="No")
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!!Proceed!!!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!");
            }
            if(cda=="No"&&bcd=="No")
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!You don't know the corners for!!");
                Console.WriteLine("!!!CDA and BCD thefore your cube!!!");
                Console.WriteLine("!!!Is determinated by the other !!!");
                Console.WriteLine("!!!two corners that are ABC and !!!");
                Console.WriteLine("!!!ADC they both equal to 90 deg!!!");
                Console.WriteLine("!!!rees and this means that the !!!");
                Console.WriteLine("!!!the cube exsists and its forged!!");
                Console.WriteLine("!!!under the field of ABCD you can!!");
                Console.WriteLine("!!!!!!!!!!Proceed!!!!!Futher!!!!!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            }
            else if(Convert.ToInt32(cda)>=1||Convert.ToInt32(bcd)>=1)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!Great the cube exsists!!!");
                Console.WriteLine("!!!You can now proceeed!!!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
            }
            int degrees = 3 * 90;
            bool checkif;
            checkif = abcd;
            if(checkif)
            {
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!You have come to the final stage of the program.!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!Now we are going to make a conclusion of the assigment!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!We are going to check if the point o is inside the circle!!!!!!!!!!!!");
                Console.WriteLine("!!!k that is inside the cube abcd we are going to use the rule!!!!!!!!!!");
                Console.WriteLine("!!!for equal corners that states that two equal corners of 90!!!!!!!!!!!");
                Console.WriteLine("!!!degree makes enough to state that the cube exsists and all!!!!!!!!!!!");
                Console.WriteLine("!!!corners equal to each other or in numbers \"{0}\"exactly degree!!!!!!",degrees );
                Console.WriteLine("!!!We are calculating the descision please wait for the check process!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.Beep();
                Console.WriteLine("$$$$$$$$$$$$$$$$$$$$$");
                Console.WriteLine("$Loading please wait$");
                Console.WriteLine("$$$$$$$$$One$$$$$$$$$");
                Console.Beep();
                Console.WriteLine("$$$$$$$$$$$$$$$$$$$$$");
                Console.WriteLine("$Loading please wait$");
                Console.WriteLine("$$$$$$$$Two$$$$$$$$$$");
                Console.Beep();
                Console.WriteLine("$$$$$$$$$$$$$$$$$$$$$");
                Console.WriteLine("$Loading please wait$");
                Console.WriteLine("$$$$$$$$$Three$$$$$$$");
                Console.Beep();
                Console.WriteLine("$$$$$$$$$$$$$$$$$$$$$");
                Console.WriteLine("$Loading please wait$");
                Console.WriteLine("$$$$$$$$$Four$$$$$$$$");
                Console.Beep();
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Loading compleate!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                Console.WriteLine("!!!Now we are going to proceed with the next step of the assigmnet please!!!");
                Console.WriteLine("!!!wait to check the score of the assigment that you need done !!!!!!!!!!!!!");
                Console.Beep();
                Random r = new Random();
                int number1 = r.Next(1,20);
                if((Convert.ToInt32(aP)>=number1)||(Convert.ToInt32(bP)>=number1)||(Convert.ToInt32(cP)>=number1)||(Convert.ToInt32(dP)>=number1))
                {
                    Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                    Console.WriteLine("!!!Your number is greater then 5 witch means that its outside the circle!!!");
                    Console.WriteLine("!!!((0.0.5)) that is surrounded by the cube (({0}.{1}.{2}.{3]))therefore!!!", Convert.ToInt32(aP), Convert.ToInt32(bP), Convert.ToInt32(cP), Convert.ToInt32(dP));
                    Console.WriteLine("!!!Your point is exactly at the size of ((0.0.{0}) witch means that your!!!");
                    Console.WriteLine("!!!Salution is equal to {0} witch is the point outide the circle and the!!!",Salution);
                    Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Cube!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                }
                else if((Convert.ToInt32(aP)<=number1)||(Convert.ToInt32(bP)<=number1)||(Convert.ToInt32(cP)<=number1)||(Convert.ToInt32(dP)<=number1))
                {
                    Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                    Console.WriteLine("!!!Your number is greater then 0.1 witch means that its inside the circle!!!");
                    Console.WriteLine("!!!((0.0.5)) that is surrounded by the cube (({0},{1},{2},{3]))therefore!!!", Convert.ToInt32(aP), Convert.ToInt32(bP), Convert.ToInt32(cP), Convert.ToInt32(dP));
                    Console.WriteLine("!!!Your point is exactly at the size of ((0.0.{0}) witch means that your!!!",number1);
                    Console.WriteLine("!!!Salution is equal to {0} witch is the point inside the circle and the!!!",Salution);
                    Console.WriteLine("!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!Cube!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!");
                }
            }
        }
    }