Print all the duplicates in the input string

#include <bits/stdc++.h>
using namespace std;
void printDups(string str)
{
    map<char,int>count;
    for(int i=0;i<str.length();i++){
        count[str[i]]++;
    }
    for(auto it: count){
        if(it.second>1){
            cout<<it.first<<", count = "<<it.second<<"\n";
        }
    }
}
int main()
{
    string str = "geeksforgeeks";
    printDups(str);
    return 0;
}