text: /* Copyright 2020 Free Software Foundation, Inc.
  
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  
  #include <stdio.h>
  #include <complex.h>
  #include <string.h>
  
  struct some_struct
  {
    float a, b;
  };
  
  /* See https://gcc.gnu.org/onlinedocs/gfortran/\
       Argument-passing-conventions.html.  */
  #if !defined (__GNUC__) || __GNUC__ > 7
  typedef size_t fortran_charlen_t;
  #else
  typedef int fortran_charlen_t;
  #endif
  
  extern void mixed_func_1d_ (int *, float *, double *, complex float *,
  			    char *, fortran_charlen_t);
  
  void
  mixed_func_1c (int a, float b, double c, complex float d, char *f,
  	       struct some_struct *g)
  {
    printf ("a = %d, b = %f, c = %e, d = (%f + %fi)\n", a, b, c,
  	  creal(d), cimag(d));
  
    char *string = "this is a string from C";
    mixed_func_1d_ (&a, &b, &c, &d, string, strlen (string));
  }
  