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  1. // unordered_map::find
  2. #include <iostream>
  3. #include <string>
  4. #include <unordered_map>
  5. using namespace std;
  6.  
  7. typedef std::unordered_map<std::string,double> mymap_t;
  8.  
  9. std::ostream& operator << (std::ostream& stream, mymap_t::const_iterator& it)
  10. {
  11.     return stream << it->first << ":" << it->second << endl;
  12. }
  13.  
  14. int main ()
  15. {
  16.   mymap_t mymap;
  17.   mymap["mom"] = 5.4;
  18.   mymap["dad"] = 6.1;
  19.   mymap["bro"] = 5.9;
  20.  
  21.   std::string input;
  22.   std::cout << "who? ";
  23.   getline (std::cin,input);
  24.  
  25.   mymap_t::const_iterator got = mymap.find (input);
  26.  
  27.   cout << got <<endl;
  28.  
  29.   if ( got == mymap.end() )
  30.     std::cout << "not found";
  31.   else
  32.     std::cout << got->first << " is " << got->second;
  33.  
  34.   std::cout << std::endl;
  35.  
  36.   return 0;
  37. }
Success #stdin #stdout 0s 2992KB
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mom
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who? mom:5.4

mom is 5.4
https://ideone.com/8hduEr
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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