map(stl) in c++

[Tavo92]

You can:

1) If your key is a structure you have created you can create the comparison function like this:

bool operator<(const YourType& k0, const YourType& k1)
{
    //do stuff...
    //return true if k0 is LESS than k1, if k0 is equal or more than k1 return false
}

bool operator<(const YourType& k0, const YourType& k1)
{
    //do stuff...
    //return true if k0 is LESS than k1, if k0 is equal or more than k1 return false
}

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2) Pass a compare function when you create the map. Read this it will explained it very well.