Console.Output to Word file

Question

Looking for some help to figure out on how can I save the output of my C# program into the word file?

class Test
{
static void Main(string[] args)
{
Application app = new word.Application();
Document doc = app.Documents.Open(filePath);
////Lines of Code
Console.WriteLine(); //Output
//How to save the above Console.Writeline in the word file??
Doc.close();
App.Quit(); } }