initial value of pointer value in std map ?

[PGK]

If I use std::map with pointer values, can I assume they will have an
initial value of zero, when I use the [] operator on a key that
doesn't exist? For example, will this:

map<int, fstream *> m;
cout << m[123];

always output a zero/NULL/0?

Thanks,
Paul

 

[ZikO]

If I use std::map with pointer values, can I assume they will have an
initial value of zero, when I use the [] operator on a key that
doesn't exist? For example, will this:

map<int, fstream *> m;
cout << m[123];

always output a zero/NULL/0?

Thanks,
Paul

Yes, it will initialize fstream pointer with zero. The same would happen
with simple int, int* etc.