#include <stdio.h>
#include <string.h>

typedef struct
{
  int c_i;
  double c_d;
} my_record;


void c_world (void)
{
  printf("\nHello World from C\n");
}

void c_w1 (int *i, double *f, my_record *myr)
{
  printf("Now in function c_w1\n"); 
  printf("Hello again from C i = %i\n%lfXXX\n",(*i),(*f));
    (*i) = 56;
    (*f) = 3.1415;
  printf("My record c_i = %i, c_d = %lf\n",myr->c_i,myr->c_d);
  myr->c_i = 42; myr->c_d = 1.2345;
  printf("My record changed to c_i = %i, c_d = %lf\n",myr->c_i,myr->c_d);
  printf("Leaving C\n");
}

int main (void)
{
  my_record m;
  int i;
  double d;
  printf("This is the main program in C\n");
  i = 3; d = 7.23; m.c_i = 21; m.c_d = 87.234;
  c_w1(&i,&d,&m);
  printf("End of program\n");
}