cpp unordered_map has key
// Function to check if the key is present or not
string check_key(map<int, int> m, int key)
{
// Key is not present
if (m.find(key) == m.end())
return "Not Present";
return "Present";
}
cpp unordered_map has key
// Function to check if the key is present or not
string check_key(map<int, int> m, int key)
{
// Key is not present
if (m.find(key) == m.end())
return "Not Present";
return "Present";
}
how to find element in unorder_map c++
// unordered_map::find
#include <iostream>
#include <string>
#include <unordered_map>
int main ()
{
std::unordered_map<std::string,double> mymap = {
{"mom",5.4},
{"dad",6.1},
{"bro",5.9} };
std::string input;
std::cout << "who? ";
getline (std::cin,input);
std::unordered_map<std::string,double>::const_iterator got = mymap.find (input);
if ( got == mymap.end() )
std::cout << "not found";
else
std::cout << got->first << " is " << got->second;
std::cout << std::endl;
return 0;
}
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