17 May 2016 Sudhanshu Ranjan 429

What is Prime Number? Print Prime Number using C#

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

 

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

namespace PrimeNumber
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Please enter the number in which you want to find the Prime No :");
            int a = Convert.ToInt32(Console.ReadLine());
            bool isPrime = true;

            for (int i = 1; i <= a; i++)
            {
                for (int j = 2; j <= a; j++)
                {
                    if (i != j && i % j == 0)
                    {
                        isPrime = false;

                        break;
                    }
                }

                if (isPrime)
                {
                    Console.WriteLine("Prime Number:" + i);
                }

                isPrime = true;
            }

            Console.ReadLine();
        }
    }
}

 

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Sudhanshu Kumar Ranjan | Lead Engineer at HCL Technologies | Expertise in Microsoft Technology | Author | Blogger | Programmer
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