vector<array<int,3>> vec;

sort(vec.begin(), vec.end());

Auto comment: topic has been updated by I_am_Heisenberg (previous revision, new revision, compare).

Write your own comparator function.

C++11 support tuple

For example:

vector<tuple<int, char, bool> > a;
int x = 1;
char y = 'a';
bool z = true;
a.push_back(make_tuple(x, y, z));

Of course you can sort vector of tuple like vector of pair:

sort(a.begin(), a.end());

To get the i-th element of a tuple, you can do like this,

int x = get<0>(a[0]) // first element of tuple a[0]
char y = get<1>(a[0]) // second element

or you can get all elements at the same time like this:

int x;
char y;
bool z;
tie(x, y, z) = a[0];

Remember it only works with C++11.

You can find more here