Re: Explanation for behavior

Hi,

I have the below code for printing out the contents of a map.
The output prints the strings contained in the value for each key in
the map.
In the first for loop, I am clearing the list contents and I am
storing the reference to the list in each of the map's entries.
Could somebody let me know as to why even after clearing the contents
of the list, I can see different strings contained in the map for each
key?

#include <iostream>
#include <map>
#include <list>
#include <string>
using namespace std;

int main() {
    typedef list<string> tslist;
    tslist slist;
    map<int, tslist> tmap;
    int i = 0, j =0;
    for (; i < 10; i++) {
        slist.clear();
        char str[10];
        itoa(i, str, 10);
        slist.push_front(string(str));
        tmap[i] = slist;
    }

    i = 0;
    for (; i < 10; i++) {
        tslist temp = tmap[i];
        tslist::iterator iter = temp.begin();
        while(iter!=temp.end()) {
            string& temp = *iter;
            cout << temp.c_str() << endl;
            iter++;
        }
    }
    return 0;
}