5 char[] chars = new char[]
6 {'0', 'F', 'f', 'x', '1', 'n', 'a'};
7 bool[] results = new bool[]
8 {true, false, false, false, true, false, false};
10 for (int i = 0; i < chars.Length; ++i) {
11 if (Char.IsNumber (chars [i]) != results [i]) {
12 Console.WriteLine ("Char '{0}' failed", chars [i]);