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

struct animal {
	char name[16];
	float weight;
	void (*print_info)(struct animal*);
};

void generic_animal_print(struct animal* a){
	printf("Name:  %s\nWeight: %f\n", a->name, a->weight);
}

/* If it were a C++ method, we'd do this:
void whale_print(){
	printf("Name:  %s\nWeight:  %f (Note:  Whale weights are in tons)\n", this->name, this->weight);
}
*/

void whale_print(struct animal* a){
	printf("Name:  %s\nWeight:  %f (Note:  Whale weights are in tons)\n", a->name, a->weight);
}

int main(){
	struct animal a1;
	strcpy(a1.name, "Fuzzy");
	a1.weight = 6.1;
	a1.print_info = generic_animal_print;

	struct animal a2 = {"Tiger", 8.1, generic_animal_print};

	struct animal a3 = {"Sneaky", 14, whale_print};

	struct animal a4 = {
		.name = "Zeke",
		.weight = 9,
		.print_info = generic_animal_print
	};

	a1.print_info(&a1);
	a2.print_info(&a2);
	a3.print_info(&a3);
	a4.print_info(&a4);
	return 0;
}