cb21a_c++_string对象的比较

*cb21a_c++_string对象的比较 s.compare(s2)--区分大小的 s.compare(pos1,n1,s2) s.compare(pos1,n1,s2,pos2,n2) s.compare(cp) s.compare(pos1,n1,cp) s.compare(pos1,n1,cp,n2)

>，，