The new C Programming language (C11, or C1x) published

It defines and clarifies:

-the representation of C programs;
-the syntax and constraints of the C language;
-the semantic rules for interpreting C programs;
-the representation of input data to be processed by C programs;
-the representation of output data produced by C programs;
-the restrictions and limits imposed by a conforming implementation of C.

It does not have:

-the mechanism by which C programs are transformed for use by a data-processing system;
-the mechanism by which C programs are invoked for use by a data-processing system;
-the mechanism by which input data are transformed for use by a C program;
-the mechanism by which output data are transformed after being produced by a C program;
-the size or complexity of a program and its data that will exceed the capacity of any specific data-processing system or the capacity of a particular processor;
-all minimal requirements of a data-processing system that is capable of supporting a conforming implementation.

ISO/IEC 9899:2011 is designed to promote the portability of C programs among a variety of data-processing systems.