trying to get the second 2nd value of same key in multimap

[srikpen]

I am unable to get the "is" I keep getting the below:

the find : this
the find : this

what I want is:

the find : this
the find : is

from the below code:

typedef multimap<int,string> IntStringMMap;
 
IntStringMMap coll; // container for int/string values
 
coll.insert(make_pair(2,"a"));
coll.insert(make_pair(1,"this"));
coll.insert(make_pair(4,"of"));
coll.insert(make_pair(1,"is"));
coll.insert(make_pair(3,"multimap"));
 
 
IntStringMMap::iterator post = coll.find(1);
cout << "the find : " << post->second << endl;
post = coll.find(1);
cout << "the find : " << post->second << endl;

[Banfa]

Try

IntStringMMap::iterator post = coll.find(1);
cout << "the find : " << post->second << endl;
post++;
cout << "the find : " << post->second << endl;
 

[srikpen]

[quote=Banfa]

Thanks very much Banfa.
Just one query. Is this "post++" (i.e. next same-key value is at next data-type + 1 address location) a compiler/c++ standard or it varies on
windows or other unix platforms?

On the other hand your solution made me to dump another workaround.
It works great.

#include <iostream>
#include <map>
#include <string>
using namespace std;
 
 
int main()
{
    // type of the collection
    typedef multimap<int,string> IntStringMMap;
 
    IntStringMMap coll;        // container for int/string values
 
    // insert some elements in arbitrary order
    // - a value with key 1 gets inserted twice
    coll.insert(make_pair(5,"tagged"));
    coll.insert(make_pair(2,"a"));
    coll.insert(make_pair(1,"this"));
    coll.insert(make_pair(4,"of"));
    coll.insert(make_pair(6,"strings"));
    coll.insert(make_pair(1,"is"));
    coll.insert(make_pair(3,"multimap"));
 
   // Find on srchkey and print all values on the srchkey
   int srchkey = 1;
   IntStringMMap::iterator post = coll.find(srchkey);
   while( post != coll.end() && post->first == srchkey )
   {
      cout << "key value " << srchkey << " has : "  << post->second << endl;
      post++;
   }
}