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

/* C has no classes; use struct instead */
struct Course
{
  char name[80];
  char number[32];
  int crn;
};

int main()
{
  printf( "sizeof struct Course is %d\n", sizeof( struct Course ) );
  struct Course c1;
  struct Course c2;

  struct Course * c3;

  /* dynamically allocate 1 struct Course */
  c3 = (struct Course *)malloc( sizeof( struct Course ) );

  int section = 1;
  strcpy( c1.name, "Operating Systems" );
  sprintf( c1.number, "CSCI-4210-%02d", section );
  c1.crn = 80569;

  strcpy( (*c3).name, "Operating Systems" );
  sprintf( (*c3).number, "CSCI-4210-%02d", section );
  (*c3).crn = 1234;
  c3->crn = 12345;

  free( c3 );

  return 0;
}