Which C++ compiler is my program using?

Question

I am not very expert in cpp programming, rather a beginner in the enormous world of programming, as these days we just install any IDE and start with our programs in it. I started using CodeBlocks IDE but just out of curiosity wanted to know which compiler is my program using as it can be 4.3.2 or 4.0.8 or maybe something else

I tried reading through the Build logs it wasn't there, a small google did not help either.

Is there any simple command which i can run in my cpp progam and check which compiler my IDE is using?

Thanks in advance.

Answer 1

You can use the macros

__GNUC__
__GNUC_MINOR__
__GNUC_PATCHLEVEL__

See http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html

Other compilers provide their own macros, for example Microsoft's _MSC_VER

Here's a very comprehensive list covering dozens of compilers: http://predef.sourceforge.net/precomp.html and http://sourceforge.net/apps/mediawiki/predef/index.php?title=Compilers

Answer 2

According to the Codeblocks FAQ:

As a matter of fact it largely depends on the used compiler plugin. Some provided with the default Code::Blocks installation are GNU GCC (MinGW/Cygwin), MS Visual C++ Free Toolkit 2003, Borland's C++ Compiler 5.5, DigitalMars Free Compiler., OpenWatcom, Small Device C Compiler (SDCC) and others.