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Monday, 18 August 2014

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How To Make A Prime Number With c#

After we learn how to check a number if it's a prime number or not, i bring you to learn how to make a prime number code with c#. But before we try to make a code, we must know what's prime number?
 A Prime Number is a number who can be divided evenly only by 1, or itself.
And it must be a whole number greater than 1.  so, do you have logic how to make prime number after you know definition prime number ? 

all right, when we try to make a prime number, we must knowing a key of prime number and this is can be divided only by 1 or itself. and we will need divided on this program. divided on the program is %.

this is a code :
 

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

namespace chapter_3_exercise_3
{
        class PrimeNumber
        {
            static void Main(string[] args)
            {
                bool Value = false;
                int f;

                Console.WriteLine("    --> PRIME NUMBER APPLICATION ! <--    ");
                Console.WriteLine ("Attention ! \nRule on this Program");
                int A;
                for (A = 1; A < 59; A = A + 1)
                {
                    Console.Write("-");
                    Thread.Sleep (20);
                }
                Console.WriteLine("\n   You Can Check Number untill you want. \n   so, you just entered the number untill you want  \n ");
                int i;
                for (i = 1; i < 59; i =  i + 1)
                {
                    Console.Write("-");
                    Thread.Sleep(20);
                }

                Console.WriteLine("\nEnter The Number  : ");
                int n = Int32.Parse(Console.ReadLine());

                for (int e = 2; e <= n; e++)
                {
                    for (f = 2; f < e; f++)
                    {
                        if (e % f == 0)
                        {
                            Value = true;
                            break;
                        }
                       
                    }
                    if (Value == false)
                        Console.Write("{0} ", f);
                    else
                        Value = false;
                
                }
                Console.WriteLine("\n\n\n");
                int K;
                for (K = 1; K < 59; K = K + 1)
                {
                    Console.Write("-");
                    Thread.Sleep(20);
                }
                Console.WriteLine("\n           | --Thank you -- |");
                int J;
                for (J = 1; J < 59; J = J + 1)
                {
                    Console.Write("-");
                    Thread.Sleep(20);
                }
                Console.ReadLine();



            }

            public static int i { get; set; }
        }
}



when you execute this code will show :



this is will be happened if we entered 19 :



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