index of member of a map?

[zon_cpp]

hi, how do i know index of an iterator of a map?

map::iterator it = mymap.find(3);

i want to know index of 'it' in mymap???

Zo.Naderi-Iran

[_Superman_]

You can increment a counter in a loop. But why do you need this. std::map always works on the key and so you must not use the index to perform any operations on the map. Here is something you could do -

map num;
int j = 0;
for (auto i = num.begin(); i != num.end(); ++i, ++j)
{
if ((*i).first == 5)
cout << j << endl;
}

Don't know if there is any other way to do this.

«_Superman_»  _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++)

Polymorphism in C

[Chris Losinger]

maps are not arranged in a simple linear order (they are trees), so there is no 'index' for an item.

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