traverse a map

    for (auto i : m) 
        cout << i.first << "   " << i.second << endl; 

// CPP program to traverse a map using range  
// based for loop 
#include <bits/stdc++.h> 
using namespace std; 
  
int main() 
{ 
    int arr[] = { 1, 1, 2, 1, 1, 3, 4, 3 }; 
    int n = sizeof(arr) / sizeof(arr[0]); 
  
    map<int, int> m; 
    for (int i = 0; i < n; i++) 
        m[arr[i]]++; 
  
    cout << "Element  Frequency" << endl; 
    for (auto i : m) 
        cout << i.first << "   " << i.second  
             << endl; 
  
    return 0; 
}