How to make Dev-C++ more C99 compliant ??

I am using Dev-C++ 4.9.9.2 . I found it not support the type long long. Here is my code

Code:

#include <stdio.h>

int main(void)
{
      unsigned int un = 3000000000; /* system with 32-bit int */
      short end = 200;              /* and 16-bit short       */
      long big = 65537;
      long long verybig = 12345678908642;

      printf("un = %u and not %d\n", un, un);
      printf("end = %hd and %d\n", end, end);
      printf("big = %ld and not %hd\n", big, big);
      printf("verybig= %lld and not %ld\n", verybig, verybig);

      getchar();
      return 0;
}

here is the warning message

Originally Posted by warning

G:\Documents and Settings\antigloss\a.c In function `main':
5 G:\Documents and Settings\antigloss\a.c [Warning] this decimal constant is unsigned only in ISO C90
8 G:\Documents and Settings\antigloss\a.c [Warning] integer constant is too large for "long" type

and the output

Originally Posted by output

un = 3000000000 and not -1294967296
end = 200 and 200
big = 65537 and not 1
verybig= 1942899938 and not 2874

My question is how to set up dev-c++ so that it'll support the type long long ??

Looks to me like it supports long long. Don't you need to append LL on the end of the constant, otherwise it treats it as just a long?

Edit:

Code:

      unsigned int un = 3000000000UL; /* system with 32-bit int */
      short end = 200;              /* and 16-bit short       */
      long big = 65537;
      long long verybig = 12345678908642LL;

I tried this prog under linux using gcc3.2. It works very well.

I've tried the suffix LL, but it didn't work. Seems like my version of devcpp didnt come with a c99 library ??

Oh, the library is a separate issue. The compiler appears to support C99, otherwise the long long declaration would have been rejected. The library appears to not if %lld didn't result in correct output.

I've heard before that dev-c++ inherits the 'bugs' of the run-time library on which it runs (namely microsoft)
http://msdn.microsoft.com/library/de..._functions.asp
So I think you need to use the "I64" grubbyness when using long long variables in printf() conversions when programming in dev-c++.
Normal arithmetic and parameter passing within your program should work as per the standard, it's just a pain to print them

To make the compiler compile C99 code, if you have a reasonably new gcc compiler, then you could try adding "-std=c99" to the compiler command line.

The gcc family had support for long long even before C99. It was an non-standard extension.

Originally Posted by Salem

I've heard before that dev-c++ inherits the 'bugs' of the run-time library on which it runs (namely microsoft)

I think you heard wrong -- by default dev-c++ (version 5) uses GNU gcc and g++ compilers, but can be changed to use any compiler you wish. standard runtime libraries are also from GNU, not M$.

There are no compilers that are 100% C99 compliant -- Comeau is probably the closest.

Originally Posted by Ancient Dragon

I think you heard wrong -- by default dev-c++ (version 5) uses GNU gcc and g++ compilers, but can be changed to use any compiler you wish. standard runtime libraries are also from GNU, not M$.

http://www.bloodshed.net/devcpp.html:

Bloodshed Dev-C++ is a full-featured Integrated Development Environment (IDE) for the C/C++ programming language. It uses Mingw port of GCC (GNU Compiler Collection) as it's compiler. Dev-C++ can also be used in combination with Cygwin or any other GCC based compiler.

http://www.mingw.org/docs.shtml#win32api:

Win32 API Documentation
MinGW uses the runtime libraries distributed with the OS, [...]

that's referring to the win32 api functions not the c or c++ runtime standard libraries. All compilers for MS-Windows os must use the MS-Windows api dlls and libraries and I would suspect the same applies to all other os as well.

http://cboard.cprogramming.com/showthread.php?p=501480

Just because I say "the sky is falling" doesn't make it so. Kenneth Thompson (the author of that quote) may or may not be an authority on the subject. MS-Windows os does not supply the libraries when you install the os, they must be installed with the compiler. Since GNU has their own open-source compiler and libraries I assumed (maybe wrongly) that Dev-C++ installed and used those. I doubt Microsoft will authorize other compilers (competetors) to distribute Microsoft proprietry/copyright runtime libraries.

Dev-C++/MinGW uses msvcrt.dll, which is distributed as part of the OS.

Dev-C++/MinGW uses msvcrt.dll, which is distributed as part of the OS.

Correct, and msvcrt.dll does not support C99. The new Visual C/C++ 2005 compiler does not support C99 either, it's ridiculous.

Note: Pelles C supports C99 and uses it's own runtime library.

Originally Posted by anonytmouse

Dev-C++/MinGW uses msvcrt.dll, which is distributed as part of the OS.

I knew that -- just making sure you guys are paying attention Won't be the first or last time I'm proving wrong.