Wrong answer on c# application, finding the n prime of a list of prime numbers.
- by user300484
Hello, I am new to C# and I am practicing by trying to solve this easy C# problem. This application will receive an "n" number. After receiving this number, the program has to show the n prime of the list of primes. For example, if the user enters "3", the program is supposed to display "5", because 5 is the third prime starting at 2. I koow that something is wrong with my code but I dont know where is the problem and how I can fix it. Can you please tell me? Thank you :P
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Console.WriteLine("Determinar el n-esimo primo.");
long n = Convert.ToInt64(Console.ReadLine()); // N lugar de primos
long[] array = new long[n];
long c=0;
while (c >= 2)
{
if(siprimo(c++) == true)
for (long i = 0; i < n; i++)
{
array[i] = c;
}
}
Console.WriteLine(array[n - 1]);
Console.ReadLine();
}
static private bool siprimo(long x)
{
bool sp = true;
for (long k = 2; k <= x / 2; k++)
if (x % k == 0)
sp = false;
return sp;
}
}
}
