Program.cs

namespace AsciiBarChart
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            var data = new Dictionary<string, long>
            {
                {"one", 1},
                {"two", 2},
                {"three", 3},
                {"four", 4},
                {"five", 5},
                {"six", 6},
                {"seven", 7},
                {"eight", 8},
                {"nine", 9},
                {"ten", 10},
                {"eleven", 11},
                {"twelve", 12},
                {"thirteen", 13},
                {"fourteen", 14},
                {"fifteen", 15},
                {"sixteen", 16},
                {"seventeen", 17},
                {"eighteen", 18},
                {"nineteen", 19},
                {"twenty", 20},
                {"nice", 69}
            };

            var graph = new AsciiBarChart(data);
            Console.WriteLine("Vertical");
            var lines = graph.DrawVertical(25);
            foreach (var line in lines)
                Console.WriteLine(line);
            Console.WriteLine("Horizontal - Compact");
            lines = graph.DrawHorizontal(78);
            foreach (var line in lines)
                Console.WriteLine(line);
            Console.WriteLine("Horizontal");
            lines = graph.DrawHorizontal(78, false);
            foreach (var line in lines)
                Console.WriteLine(line);
        }
    }
}