old c,cc examples

1 files changed, 78 insertions, 0 deletions

diff --git a/c,cc/ooc.c b/c,cc/ooc.c
new file mode 100644
index 0000000..aa20488
--- /dev/null
+++ b/c,cc/ooc.c
@@ -0,0 +1,78 @@
+#include "ooc.h"
+#include "stdio.h"
+#include "string.h"
+
+
+struct van {
+       struct vehicle base;
+          int cubic_size;
+};
+
+struct bus {
+    struct vehicle base;
+       int seats;
+};
+
+struct van*
+make_van()
+{
+  struct van* v = malloc(sizeof(struct van));
+  v->base.type = "van";
+  v->cubic_size = 12;
+  return v;
+}
+
+struct bus*
+make_bus()
+{
+  struct bus* v = malloc(sizeof(struct bus));
+  v->base.type = "bus";
+  v->seats=112;
+  return v;
+}
+
+struct vehicle*
+make_vehicle(const char* type)
+{
+  if(!strcmp(type, "van")) return make_van();
+  if(!strcmp(type, "bus")) return make_bus();
+  return NULL;
+}
+
+void
+do_something_with_a_bus(struct vehicle* v)
+{
+  ((struct bus*)v)->seats = 13;
+}
+
+void
+do_something_with_a_van(struct vehicle* v)
+{
+  ((struct van*)v)->cubic_size = 11;
+}
+
+void
+do_something(struct vehicle* v)
+{
+  if(!strcmp(v->type, "van")) return do_something_with_a_van(v);
+  if(!strcmp(v->type, "bus")) return do_something_with_a_bus(v);
+}
+
+int
+main(void) {
+  struct van my_van;
+  struct vehicle *something = &my_van;
+  my_van.cubic_size = 100;
+  my_van.base.power = 99;
+  printf("%d\n", something->power);
+  printf("%d\n", my_van.base.power);
+
+  struct bus* bus = make_vehicle("bus");
+  printf("%s\n", bus->base.type);
+  printf("%d\n", bus->seats);
+  do_something(bus);
+  printf("%d\n", bus->seats);
+ 
+  return 0;
+}
+