Accessing elements of structure inside a map datastructure

Question

I have this structure, and map datastructure like :

#include <map>

struct category {
        int id;
        std::string name;
};

std::map<int, category> categories;

Now, using categories I want to display element "name" which is in structure category. But I am not able to access it. Can anyone help?

Thanks

Luchian Grigore · Accepted Answer · 2012-07-31 18:25:11Z

2

What do you mean you can't access it?

categories[0].name;

should be enough.

answered Jul 31, 2012 at 18:25

Luchian Grigore

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6 Comments

GWW Over a year ago

Unless categories is const

SandBag_1996 Over a year ago

categories[0].name would represent the name for the first element ,right?

Luchian Grigore Over a year ago

@GWW categories is declared as std::map<int, category> categories;

Luchian Grigore Over a year ago

@UnderDog no, the element with key 0.

SandBag_1996 Over a year ago

@luchian : Pardon me for my ignorance, I didnt understand it well. structure category is key for my map function. There are 10 elements in my map function and each one has a name. Now I want to access member "name" of structure for each element, so by using categories[0].name, I would be able to do that?

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