16-02-02-2.cpp

more efftive 代码

#include <iostream>
#include <map>
#include <string>
using namespace std;

int main() {
  map<string, int> M;
  
  M.insert(make_pair("A", 17));
  M.insert(make_pair("B", 74));
  
  if (M.find("Z") == M.end())
    cout << "Not found: Z" << endl;

                   //