Question

怎么对两个multimap或map 中的键值进行比较

Answer 1

#include <map>

multimap <string,string> ::const_iterator p_iter;
p_iter = p.find(ip); //返回第一个出现ip的位置
if(p_iter == m.end())
cout < < "Element cannot be found " < <endl;
else
cout < < "Element is found " < <endl;