explain this code and result

Question

static void Main(string[] args)
{
int x = 10;
double y = 20;

Console.WriteLine("x = {0}; y = {1}", x, y);
}
// Output: x = 10; y = 20

Answer 1

{} and {} seem to be placeholders for the variables that are inserted, and 0 and 1 the indexes of the variables in the order they follow.

Answer 2

HonFu That is true. {} Are placeholders. That is the way c# can print the values of its variables.