2014-ex-13.c

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

struct car{ 
  char make[30];
  char model[30];
  int  year;
  int  mileage;
};

struct carlist {
  int num_cars;
  struct car *cars;
};

void print_car(struct car c)
{
  printf("Make:\t%s\nModel:\t%s\nYear:\t%d\n Mileage:\t%d\n", c.make,c.model,c.year,c.mileage); 
}

void print_car_list(struct carlist l)
{
  int i;
  for(i=0; i < l.num_cars; ++i){
    print_car(l.cars[i]);
  }
}

void add_car_to_list(struct carlist *l, struct car c)
{
  // check space in array
  if ( sizeof(l->cars)/sizeof(l->cars[0]) <= l->num_cars ){
    printf("There are too many cars in the array. Unable to add an element.\n");
  }
  int i = l->num_cars;

  l->cars[i]=c;

  ++l->num_cars;
}

struct carlist *find_cars(int year, struct carlist *l)
{
  struct carlist *result = calloc(1,sizeof(struct carlist) );
  int i;

  for(i=0; i < l->num_cars; ++i){
    if (l->cars[i].year == year){
      add_car_to_list(result,l->cars[i]);
    }
  }
  return result;
}

int main ( void )
{

}