Creating vector of sets as a class member gives error in c++

Question

I want to create 9 sets and put them in vector.The following code error outs

class X{
   vector<set<int> > rowset(9,set<int>());
};
Line 2: expected identifier before numeric constant

Following works ok. But i want to insert empty sets in vector so that i don't have to do a push_back. Please suggest why the above code is erroring out.

class X{
   vector<set<int> > rowset;
};

score 2 · Answer 1 · answered Mar 19 '18 at 01:45

2

What about:

class X{
  X():rowset(9,set<int>()){}
  vector<set<int> > rowset;
};

answered Mar 19 '18 at 01:45

uvgroovy

453
3
9

Ronan Boiteau · Accepted Answer · 2018-03-30T19:53:51.477

2

Use this:

vector<set<int> > rowset = vector<set<int> >(9, set<int>());

...or that:

vector<set<int> > rowset{vector<set<int> >(9, set<int>())};

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edited Mar 30 '18 at 19:53

answered Mar 19 '18 at 01:45

Ronan Boiteau

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Creating vector of sets as a class member gives error in c++

2 Answers2