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C ++ partial initialization with curly braces

Is this initialization valid by the standard? Will it create an empty vector so that I can insert data ( vector<Pair<float, string> >

s) later ?

struct A
{
    int a;
    int b;
    vector<vector<Pair<float, string> > > c;
};

A obj = {1, 2};
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1 answer


Pair can be changed to std::pair

( #include <utility>

) if Pair is not defined. Partial initialization is allowed in the corrected program (see below), it prints 1, 2, 0, since it is c

also initialized as a vector with no elements.



struct A
{
    int a;
    int b;
    vector<vector<std::pair<float, string> > > c;
};

A obj = {1, 2};

int main()
{
    cout << obj.a << ", " << obj.b << ", " << obj.c.size() << endl;
    return 0;
}
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