C++ unordered_set insert

Introduction

To insert single or multiple values into an unordered_set, we use the.insert() member function: 

#include <iostream> 
#include <unordered_set> 

int main() /* w w w. j a v a 2  s  .  c o m*/
{ 
    std::unordered_set<int> myunorderedset = { 1, 2, 5, -4, 7, 10 }; 
    myunorderedset.insert(6); // insert a single value 
    myunorderedset.insert({ 8, 15, 20 }); // insert multiple values 
    for (auto el : myunorderedset) 
    { 
        std::cout << el << '\n'; 
    } 
}



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