How to use c or c++ code in golang?

Question

C++ / C#

Please tell me a simple example of using a function from c \ c++ in a golang program.
For example, in c \ c ++ there will be a function sayHello returning the value - "Hi, Roman, this is the value from the function." This is the text I want to get in a golang program.
How to do it? I read - you still need to install the gcc compiler. Can you please give examples.
Thanks

Answer 1

For example, through cgo - https://golang.org/cmd/cgo/
Well, an example of this:
rextester.com/TLV57435