What happens if I read a map's value where the key does not exist?

Question

map dada;
dada[\"dummy\"] = \"papy\";
cout << dada[\"pootoo\"];

I\'m puzzled because I don\'t know if it\'s considered

Answer 1

please have a look at the out_of_range exception: http://www.cplusplus.com/reference/stdexcept/out_of_range/

this is what map::at and map::operator[] will throw if key does not exist. You can catch it the same way as the vector example in the link.

You can also use: http://www.cplusplus.com/reference/map/map/find/

And check against map::end