use stdio.h
"coro.h"

struct count
	Thread t
	Int *o
count(struct count *t)
	switch t->t.pc
	0	get(t->o, t) ; t->t.pc=1 ; return
	1	t->o->i=0
		while t->o->i<11
			yield(t->o, t.t) ; t->t.pc=2 ; return
	2		++t->o->i

struct add
	Thread t
	Int *i1, *i2, *o
add(struct add *t)
	switch t->t.pc
	0	while 1
			yield(t->o, t) ; yield(t->i1, t) ; yield(t->i2, t)
			t->pc=1 ; return
	1		t->pc=2 ; return
	2		t->pc=3 ; return
	3		t->o->i = t->i1->i + t->i2->i

struct printd
	Thread
	Int *i
printd(struct printd *t)
	switch t->pc
	0	while 1
			yield(t->i, t) ; t->pc=1 ; return
	1		printf("%d\n", t->i->i)

main()
	Int i1, i2, i3
	struct count c1, c2
	struct add a
	struct printd p
	c1.f = count
	c2.f = count
	a.f = add
	p.f = printd
	connect(&c1.o, &i1, &a.i1)
	connect(&c2.o, &i2, &a.i2)
	connect(&a.o, &i3, &p.i)
	start(&c1)
	start(&c2)
	start(&a)
	start(&p)
	run()