How to find the host address of Microsoft SQL Server 2012 Express?

Question

SQL Server

I need Microsoft SQL Server 2012 Express for a special program, I downloaded it, it’s nothing complicated, but I don’t understand how to find out its address, you need to specify in the program:

Значение "служба БД" должно иметь вид хост\копия_имени_sql-сервера

where to watch it? And if the sql server is, for example, not on the same PC, but on another one on the network or on the Internet,
if I forward the port to it and get the ip of the computer on which the sql server is installed ..
ps is worth win 10

Answer 1

if on the same: 127.0.0.1
if on another - see cmd-> ipconfig on it.