1typedef struct { double x, y; } p; 2typedef struct { int s; float r; } t; 3t *e, i; 4int i1; 5 6f(t *op) 7{ 8int i2 = e->r; 9p pt; 10int c = g(); 11t p; 12 13if (c) 14{ 15i = *e; 16e -= 3; 17return 8; 18} 19if (op > e) 20return 1; 21op->r = pt.x; 22op->r = pt.y; 23p = *e; 24++e; 25e->r = i1, e->s = i1; 26*++e = p; 27return 3; 28} 29