Unable to locate a C-compiler required by Stateflow and MATLAB Function blocks.

please if any one can help me to figure out what is wrong with the matlab function box in Simulink so it is looking like popular problem as I see. """Unable to locate a C-compiler required by Stateflow and MATLAB Function blocks. Use 'mex -setup' to select a supported C-compiler.""" I print that in work space "mex-setup" then as follow >> mex -setup

Welcome to mex -setup. This utility will help you set up a default compiler. For a list of supported compilers, see http://www.mathworks.com/support/compilers/R2013a/win64.html

Please choose your compiler for building MEX-files:

Would you like mex to locate installed compilers [y]/n? n

Select a compiler: [1] Intel C++ 13.0 (with Microsoft Software Development Kit (SDK) linker) [2] Intel C++ 13.0 (with Microsoft Visual C++ 2010 linker) [3] Intel C++ 13.0 (with Microsoft Visual C++ 2012 linker) [4] Intel C++ 12.0 (with Microsoft Software Development Kit (SDK) linker) [5] Intel C++ 12.0 (with Microsoft Visual C++ 2008 SP1 linker) [6] Intel C++ 12.0 (with Microsoft Visual C++ 2010 linker) [7] Intel C++ 11.1 (with Microsoft Visual C++ 2008 SP1 linker) [8] Intel Visual Fortran 13 (with Microsoft Software Development Kit (SDK) linker) [9] Intel Visual Fortran 13.0 (with Microsoft Visual C++ 2010 linker) [10] Intel Visual Fortran 13.0 (with Microsoft Visual C++ 2012 linker) [11] Intel Visual Fortran 12 (with Microsoft Software Development Kit (SDK) linker) [12] Intel Visual Fortran 12.0 (with Microsoft Visual C++ 2008 SP1 linker) [13] Intel Visual Fortran 12.0 (with Microsoft Visual C++ 2008 Shell linker) [14] Intel Visual Fortran 12.0 (with Microsoft Visual C++ 2010 linker) [15] Intel Visual Fortran 11.1 (with Microsoft Visual C++ 2008 SP1 linker) [16] Intel Visual Fortran 11.1 (with Microsoft Visual C++ 2008 Shell linker) [17] Microsoft Software Development Kit (SDK) 7.1 [18] Microsoft Visual C++ 2005 SP1 [19] Microsoft Visual C++ 2008 SP1 [20] Microsoft Visual C++ 2010 [21] Microsoft Visual C++ 2012

[0] None

Compiler:

""so here what I have to do"" I took each one but no benefit. I followed this link also fail so what I have to do right know

[Geoff Hayes]

Ahmed - do you have any of the above compilers that are valid for your version of MATLAB and version of Windows? Why did you select n when the question asks you if you would like mex to locate installed compilers?