Why does this nested loop output starts at 8 and 18?

Question

I don't understand why this loop starts at 8 and 18 when I output it, but when I try "i < 10 and j < 10", it starts at 2 and 2. Can someone explain this to me?

class Program
{
    static void Main(string[] args)
    {
        for (int i = 2; i < 100; i++)
        {
            for (int j = 2; j < 100; j++)
            {
                Console.WriteLine("i = {0} and j = {1}", i, j);
            }                 
        }
    }
}

Screenshot of my issue:

Answer 1

It is because you exceed the number of lines that your console is set to display at once.

The property is called Console.BufferHeight.

Try writing Console.WriteLine(Console.BufferHeight); to see the number of lines your console is set to display at once.

You can change it simply by writing setting it to your desired value, e.g. Console.BufferHeight = 20000; or changing the settings of the console by accessing the properties in the manner, that @Greg elaborated on.

Answer 2

Are you sure that it isn't starting at i = 2 and j = 2? You are running this loop so many times that your console output may not show that it starts at 2,2, even though it does. Try setting a breakpoint in the second for loop, I think you'll see it is starting at 2, 2. That's because the buffer size is too small.

Here's what you can do:

• Run your project.
• Right-click on the title bar-> Properties-> Layout.
• Set your height to something really large.

You can refer to this question for more.