程序代码：

const int CONSOLE_WIDTH = 80;
const int MAX_WIDTH = CONSOLE_WIDTH - 1;

string output = string.Format("{0}\n{1}\n{2}\n{3}", "some stuff", "more stuff", new string('a', 100), "some other stuff...")
    .Split('\n')
    .SelectMany(s => Enumerable.Range(0, s.Length / MAX_WIDTH + 1).Select(i => s.Substring(i * MAX_WIDTH, Math.Min(s.Length - i * MAX_WIDTH, MAX_WIDTH))))
    .Select(s => s.PadLeft(MAX_WIDTH))
    .Aggregate((s1, s2) => s1 + "\n" + s2);

Console.WriteLine("{0,79}", new string('a', 10)); // OK
Console.WriteLine("{0,79}", new string('a', 100)); // KO