Range Based For Loop in GCC 4.6.3

[dmcenean]

Hi Folks,
I am a beginner in C++ and would like to try out a range based for loop. I am using gcc 4.6.3. According to the link below, gcc 4.6.3 should allow me to use a range based for loop.

http://gcc.gnu.org/projects/cxx0x.html

However when attempting to run the code below, my IDE (Eclipse) reports the following error:

"error: #error This file requires compiler and library support for the upcoming ISO C++ standard, C++0x. This support is currently experimental, and must be enabled with the -std=c++0x or -std=gnu++0x compiler options:

int a[5] ={1,2,3,4,5};

for (int x : a)
{
cout<<x;
}

If gcc 4.6.3 supports range based for loops why do I get this error?

Thanks!

[firedraco]

You must compile with the C++0x flag.