finding multiple modes from a vector of doubles

So we were asked to get the mode(s) for a vector that the user is going to fill in, it is a vector of doubles, so far i got it working for getting 1 mode, but when it comes to more than 1 mode i freeze, anyone got any suggestions ?(btw im a beginner with coding so don't roast )

void getMode(vector<double> v)
{
    double element = 0;
    int freq = 0;

    for (int it = 0; it != v.size(); it++)
    {
        double tempElement = v[it];
        int tempFreq = 0;
        for (int i = 0; i < v.size(); i++)
            if (v[i] == tempElement)
                tempFreq++;
        if (tempFreq > freq)
        {
            element = tempElement;
            freq = tempFreq;
        }
     }

    if(freq > 1 )
    { 
        cout << "\nfreq: " << freq <<"\nElement: " << element;
    }
    else
    {
        cout << "\nno mode ";
    }
}

so lets say the user inputs 1,1,3,3,4,5 my mode will be only the number 1 instead of 1 and 3, it basically takes the first mode it finds and prints it instead of printing both modes i got.

Solution

Here is another example using unordered_map to count the frequencies:

#include <algorithm>
#include <iostream>
#include <vector>
#include <unordered_map> 
using namespace std;

bool compareFreq(const pair<double,int> &p1, const pair<double,int> &p2) 
{ 
    return (p1.second > p2.second); 
}

void getMode(const vector<double> &v)
{
    unordered_map<double,int> freq_map;
    for (auto elem : v) {
        freq_map[elem]++;
    }
    vector<pair<double,int>> freq_vec(freq_map.begin(), freq_map.end());
    sort(freq_vec.begin(), freq_vec.end(), compareFreq);
    for (auto elem : freq_vec ) {
        cout << elem.first << " : " << elem.second << endl;
    }     
}

int main()
{
    vector<double> v {1.0, 2.0, 1.0, 3.0, 4.0, 3.0, 3.0};

    getMode(v);

    return 0;
}

Output: