#71315 - bmnb1234 - Sat Feb 11, 2006 9:04 pm
Hi
I have a question all my experience is in C++. I been coding for years . I hate ask but is yeti 3d a c or c++ app It has a c extension but In Derek's commits "but that will
be after im 100% sure the C++ is as fast as it can be.". Looking at the code I am not sure.
Could some one clarify this for me please?
#71347 - josath - Sun Feb 12, 2006 12:44 am
You have years of experience with C++, but can't tell if you are looking at C++ code or not?
#71353 - Darkflame - Sun Feb 12, 2006 12:56 am
| josath wrote: |
| You have years of experience with C++, but can't tell if you are looking at C++ code or not? |
If he knows one, but never used the other, then compareing the two would be hard.
#71365 - keldon - Sun Feb 12, 2006 3:36 am
| Darkflame wrote: |
| josath wrote: | | You have years of experience with C++, but can't tell if you are looking at C++ code or not? |
If he knows one, but never used the other, then compareing the two would be hard. |
Yes, very true. Knowing C++ inside out and top to bottom does not tell you any of the features of C. C does not have:
# anonymous unions
# classes
# constructors and destructors
# exceptions and try/catch blocks
# external function linkages (e.g., extern "C")
# function overloading
# member functions
# namespaces
# new and delete operators and functions
# operator overloading
# reference types
# standard template library (STL)
# template classes
# template functions
# local variable declarations within conditional expressions (e.g. for ( int i ...)
# token spellings, e.g. (and for &&, and and_eq for &=)
For more information see http://david.tribble.com/text/cdiffs.htm#intro
#71401 - tepples - Sun Feb 12, 2006 4:15 pm
| keldon wrote: |
Knowing C++ inside out and top to bottom does not tell you any of the features of C. C does not have:
# anonymous unions |
Feature may be provided by C compiler implementors as an extension to the C language.
| Quote: |
| # external function linkages (e.g., extern "C") |
This is already a common language extension. Specifically, I've seen 'extern pascal' in a lot of old code for Macintosh and Apple IIGS as well as 'fastcall', 'syscall', 'stdcall', and 'interrupt' on various platforms.
| Quote: |
# local variable declarations within conditional expressions (e.g. for ( int i ...)
|
This feature has made it into the latest version of C (nicknamed C99).
'class' is largely a synonym for 'struct' anyway. The major difference is whether methods are allowed.
| Quote: |
| # token spellings, e.g. (and for &&, and and_eq for &=) |
Did somebody say #define?
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.
#71403 - keldon - Sun Feb 12, 2006 4:45 pm
http://david.tribble.com/text/cdiffs.htm#intro
| tepples wrote: |
'class' is largely a synonym for 'struct' anyway. The major difference is whether methods are allowed.
Did somebody say #define? |
Yes, but classes also have destructors and empty constructors; and yes for the defines.
I was being quite general with this list; well actually it was all copied from that link. Still got problems with 'for (int i' in one of my c compilers; maybe one of the gb(a)dev compilers.
#71430 - sajiimori - Sun Feb 12, 2006 9:45 pm
To clarify, the struct and class keywords are exactly equivalent in C++, except that struct defaults to public and class defaults to private.
In C++, types declared using struct can have member functions. The compiler will also generate default constructors, destructors, copy constructors, and assignment operators for types declared using struct.
#71439 - keldon - Sun Feb 12, 2006 10:58 pm
Oh sorry; my mistake. I never knew that.
#73712 - bmnb1234 - Mon Feb 27, 2006 7:20 pm
I apresiate the respones I thought it looked c++ the c extention just though me off. Why anyone would wite c++ code in file with a c extention is beyound me
thanks!
Jason