c++ #include semantics

this churned doubt same pre-processing instruction.

1 - <> "" ?

apart info found msdn:

1.a: differences between twin notations?

1.b: compilers exercise same way?

1.c: <>, "" (i.e. criteria header include)?

2 - #include {theproject/theheader.hpp} {theheader.hpp} ?

i've seen during slightest twin ways minute includes one's digest headers.
considering have during slightest 4 forms headers, is:

• private headers your project?


• headers your project, nonetheless exporting black (and thus, "public")


• headers another digest your way links with


• headers compiler customary library

for any kind headers:

2.a: <> "" ?

2.b: consolidate {theproject/theheader.hpp}, {theheader.hpp} only?

3 - bonus

3.a: work digest sources and/or headers within tree-like organization (i.e., directories inside directories, opposing "every record directory") pros/cons?