why cannot find std::pair in netbeans on ubuntu

Question

I have just configured c/c++ in netbeans on ubuntu and when i try to use std::pair it seems that the compiler cannot find it that is very strange the default version of c++ is c++11 that a slice of my code

int n, k;
cin >> n>>k;
vector<pair<int,int> > x(n);

thanks in advance

The code you've shown requires `#include `, `#include `, `#include `, and the [highly discouraged](http://stackoverflow.com/q/1452721/1782465) `using namespace std;`. Are all of these present in your code? — Angew is no longer proud of SO, Jan 21 '16 at 09:05
I recommend you check e.g. [this `std::pair` reference](http://en.cppreference.com/w/cpp/utility/pair). — Some programmer dude, Jan 21 '16 at 09:11
that's sure that i have written #include #include but it seems the i miss #iclude — Mohammad Shaban, Jan 21 '16 at 14:28

score 3 · Accepted Answer · answered Jan 21 '16 at 09:26

You need to include the right header files a the beginning of your source files so that the compiler know the different types/objects:

#include <iostream> // For std::cin
#include <vector>   // For std::vector
#include <utility>  // For std::pair

And use the std namespace by default if you want (before main() typically):

using namespace std;

why cannot find std::pair in netbeans on ubuntu

1 Answers1