random_shuffle isn't working

[shadowvillian]

I using random_shuffle from the #include <algorithm> library to randomize the elements of a 46 element vector. Buts its always the same. Do I need to seed something and whats the third parameter do in random shuffle?

http://cplusplus.com/reference/algorithm/random_shuffle/

[Duthomhas]

You need to seed the random number generator. See lines 6, 7, and 17 of the example.

[shadowvillian]

Works perfect thanks!