//get a list of 100 triangle numbers
LinkedList<double> tri_nums = new LinkedList<double>();
for( int n = 1; n<101 ; n++)
{
    double value = (.5 * n) * (n + 1);
    tri_nums.AddLast(value);
}
//evaluate word values and compare
StreamReader nameStream;
string fullBook = "";
nameStream = File.OpenText("C:\\Euler\\words.txt");
fullBook = nameStream.ReadToEnd();
nameStream.Close();
string[] names = fullBook.Split(',');
int tri_count = 0;
for (int i = 0; i < names.Length; i++)
{
    int namePosition = (i + 1);
    string name1 = names[i].Replace('"', ' ').Trim();
    int letter_sum = 0;
    for (int j = 0; j < name1.Length; j++)
        letter_sum += (int)(name1[j] - 64);
    if (tri_nums.Contains(letter_sum))
    {
        Console.WriteLine("triangle Word : " +  name1 );
        tri_count++;
    }
}
Console.WriteLine();
Console.WriteLine("Triangle word count : " + tri_count);

//get a list of 100 triangle numbers LinkedList<double> tri_nums = new LinkedList<double>(); for( int n = 1; n<101 ; n++) { double value = (.5 * n) * (n + 1); tri_nums.AddLast(value); } //evaluate word values and compare StreamReader nameStream; string fullBook = ""; nameStream = File.OpenText("C:\\Euler\\words.txt"); fullBook = nameStream.ReadToEnd(); nameStream.Close(); string[] names = fullBook.Split(','); int tri_count = 0; for (int i = 0; i < names.Length; i++) { int namePosition = (i + 1); string name1 = names[i].Replace('"', ' ').Trim(); int letter_sum = 0; for (int j = 0; j < name1.Length; j++) letter_sum += (int)(name1[j] - 64); if (tri_nums.Contains(letter_sum)) { Console.WriteLine("triangle Word : " + name1 ); tri_count++; } } Console.WriteLine(); Console.WriteLine("Triangle word count : " + tri_count);