Thread: pairs of vector..

consider this :

Code:

typedef pair<char,char> twin;
vector<twin> here;

now how do I assign and/or access each vector and/or pair in here?

I tried here.first and twin.first and both didnt worked...

Luigi

You use "first" and "second" to access the parts of the pair. Here is a simple example.

Code:

#include <utility>
#include <iostream>
using namespace std;

// Less typing later..
typedef struct pair< float, int > myPair;

int main( int argc, char *argv[] )
{
  // Use helpful function to assign values to pair
  myPair pair1 = make_pair( 25.5f, 5 );

  // Output values
  cout << pair1.first << "  " << pair1.second << endl;

  // Assign new values using first and second
  pair1.first = 101.2f;
  pair1.second = 55;

  // Output new values
  cout << pair1.first << "  " << pair1.second << endl;

  return 0;
}

Well the first reply explains how to use vectors the second explains pairs

Just do as both people said.

Code:

my_pair_vect[0].first = whatever;

So shouldn't the title be vector of pairs?