Tablica i error C2057: expected constant expression

int number_players = 0;

int ReturnNumberPlayers()
{
    system( "CLS" );
    HANDLE handle;
    handle = GetStdHandle( STD_OUTPUT_HANDLE );
    SetConsoleTextAttribute( handle, 2 );
   
    SetConsoleTextAttribute( handle, 7 );
    std::cout << "\t\t\t";
    for( int i = 0; i < 32; ++i )
    {
        SetConsoleTextAttribute( handle, 1 );
        std::cout << "-";
    }
    SetConsoleTextAttribute( handle, 7 );
    std::cout << "\n\t\t\tEnter number of players [max.5]: ";
    std::cin >> number_players;
    Sleep( 1000 );
    return number_players;
}
void GetNamesPlayers( int number_players )
{
    system( "CLS" );
    HANDLE handle;
    handle = GetStdHandle( STD_OUTPUT_HANDLE );
   
    std::string names_players[ number_players ];
   
    for( int i = 1; i < number_players + 1; ++i )
    {
        SetConsoleTextAttribute( handle, 7 );
        std::cout << "\t\t\t";
        for( int y = 0; y < 32; ++y )
        {
            SetConsoleTextAttribute( handle, 1 );
            std::cout << "-";
        }
        SetConsoleTextAttribute( handle, 7 );
        std::cout << "\n\t\t\tEnter name player " << i << " ";
        std::cin >> names_players[ i ];
        Sleep( 1000 );
        _getch();
    }
}

const int test = number_players;
std::string names_players[ test ];

#include <vector>

//...

std::vector < std::string > names_players( number_players );