Using unordered_set

UnorderedSetUsage.cpp

#include <iostream>
#include <unordered_set>

typedef std::unordered_set< int > IntUSet;

int main()
{
    IntUSet iset;

    // Insert
    iset.insert( 10 );
    iset.insert( 99 );
    iset.insert( 1000 );

    // Find
    if ( iset.end() == iset.find( 99 ) )
        std::cout << "Not found\n";
    else
        std::cout << "Found\n";

    // Remove
    iset.erase( 10 );

    return 0;
}