Convert MATLAB code to C++ code

I have a simple function in M-function file which I want to convert to C++.

After following all the steps mentioned in the Documentation, I got the .cpp file ... However when I run this file in Visual studio, I got the following error: "error LNK1561: entry point must be defined" since the code doesn't have int main() at the beginning.

This is the generated c++ code:

/* * emcrand.cpp * * Embedded MATLAB Coder code generation for function 'emcrand' * * C source code generated on: Sat Apr 14 17:24:57 2012 * */

/* Include files */ #include "rt_nonfinite.h" #include "emcrand.h" #include "rand.h"

/* Type Definitions */

/* Named Constants */

/* Variable Declarations */

/* Variable Definitions */

/* Function Declarations */

/* Function Definitions */ real_T emcrand(void) { return m_rand(); }

/* End of Embedded MATLAB Coder code generation (emcrand.cpp) */

Would you please help finding what and where possibly could be the error ? Why the .cpp file doesn't have the int main() as it should be ?

Thanks.

Answer 1

[Rick Rosson]

MATLAB Coder does not generate a main() function for you. You have to write this function yourself in C or C++ and include it in the parent project before compiling the generated code.

[deep]

Thanks a lot.

I wrote the main function in C++ as you suggested. I called the generated code from this main function as follows:

/*

** main.c

*/

#include <stdio.h>

#include <stdlib.h>

#include "emcrand.h"

#include "emcrand_initialize.h"

#include "emcrand_terminate.h"

int main()

{

emcrand_initialize();

printf("emcrand=%g\n", emcrand());

emcrand_terminate();

return 0;

}

When I run the above code, unfortunately I have the following errors:

1. error LNK2001: unresolved external symbol "unsigned int v4_state" (?v4_state@@3IA) file: emcrand_initialize.obj

2. I receive also errors: LNK2019 and LNK1120

I think all the errors are related but I have no idea how to resolve them.

Please Help me !!!!