introductory-examples/program-organization/2/compilation - Compilation of the namespaces and client.

Lecture 4 - slide 19 : 29 Program 6

In Windows SDK
csc /target:library ex.cs
csc /target:library /reference:ex.dll client.cs
csc /target:library /reference:ex.dll client-equiv.cs

In MONO
gmcs /target:library ex.cs
gmcs /target:library /reference:ex.dll client.cs
gmcs /target:library /reference:ex.dll client-equiv.cs