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wrote:

> I want to know the current support status of c99 on Microsoft Visual
> Studio. Anyone know whether Microsoft has any plan to support c99 on
> Visual Studio?

The current version of the Microsoft compiler (v7.1) does not support
many C99 features. As far as I can tell this won't change in v8 (it has
not changed in the v8 beta).

On the other hand the Intel v8 compiler, which can be fully integrated
into Visual Studio, does support many C99 features using the /Qc99 option:

Restricted pointers
Variable-length Arrays
Flexible array members
Complex number support (_Complex keyword)
Hexadecimal floating-point constants
Compound literals
Designated initializers
Mixed declarations and code
Macros with a variable number of arguments
Inline functions (use inline keyword)
Boolean type (_Bool keyword)

These C99 features are NOT supported:

#pragma STDC FP_CONTRACT
#pragma STDC FENV_ACCESS
#pragma STDC CX_LIMITED_RANGE

Brian Gladman