Shriramana Sharma wrote: > which all mean the same. But we are not allowed to use binary values: > > 0b1111101000 > > So I wonder if this can be included into a future standard of both C and > C++. Does anyone know if this has already been suggested and accepted? This feature was actually added to gcc 4.3 back in April, after sitting around in various patch forms for nearly two years. If you read the thread, it is hoped that having this feature in a popular production compiler will inspire the standards bodies to adopt it in the future, where they have previously dismissed it as unnecessary. http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23479 http://gcc.gnu.org/ml/gcc-patches/2007-04/msg01458.html Brian