Best compiler for C/C++?

[huckleberry]

I have heard that gcc/g++ is not good enough. It allows a lot of stuff that it shouldn't; i.e

int x=5;
int a[x];

Are there any other good compiler out there?

[JohnGraham]

I have heard that gcc/g++ is not good enough.

Good enough for what? It's definitely not very good as an airbag. Darn walls.

It allows a lot of stuff that it shouldn't; i.e

int x=5;
int a[x];

Are there any other good compiler out there?

1. There have been a lot of extensions made to C. Pretty much all compilers allow things they "shouldn't". Whether that makes the compiler less "good" is a matter of opinion.
2. You can get gcc to be standards compliant by using the -pedantic flag. If you want to conform to a particular ISO C standard, you also need to specify -std=c89 or -std=c99 (the default is -std=gnu89, i.e. C89 with GNU extensions such as the variable-length array you demonstrated above).