- if(strcmp(a->from->name, a->to->name) < 0)
- name_a1 = a->from->name, name_a2 = a->to->name;
- else
- name_a1 = a->to->name, name_a2 = a->from->name;
-
- if(strcmp(b->from->name, b->to->name) < 0)
- name_b1 = b->from->name, name_b2 = b->to->name;
- else
- name_b1 = b->to->name, name_b2 = b->from->name;