Primtiive calculator in c++

#include <iostream>
#include <vector>
#include <algorithm>
#include <stdio.h>
#include <stdlib.h>

long long f(long long n, vector <long long> arr)
{ 
    arr[1]=0;

    arr.push_back(n);
    long long ans=0, ret=0;

    if (n==1)
    {
        return (0);
    }
    ans= f(n-1, arr) + 1;


    if (n%2==0)
    {
        ret= f(n/2, arr) + 1;
        if (ret<ans)
        {
            ans=ret;
            std::cout<<ans<<'\n';
        }
    }
    if (n%3==0)
    { 
        ret= f(n/3, arr) + 1;
        if (ret<ans)
        {
            ans=ret;
            std::cout<<ans<<'\n';
        }
    }
    arr[n]=ans;

    return arr[n];    
}

int main() {

    long long n;
    std::cin >> n;
    std::vector<long long> arr;
    std::cout<<f(n, arr);

    return 0;
}

Source: stackoverflow.com

Similar codes

0 vote132 views1 answer
Could not find the task c c++ active file
C++
0 vote141 views1 answer
Allow cross origin
C++
0 vote131 views1 answer
C++ enum rand
C++
7 votes135 views6 answers
C++ sleep function
C++
11 votes140 views3 answers
C++ map iterator
C++
2 votes155 views2 answers
Stack algorithm in c++
C++
0 vote142 views1 answer
Cin exceptions c++
C++
19 votes127 views5 answers
C++ how to generate a random number in a range
C++
0 vote141 views1 answer
Input n space separated integers in c++
C++
0 vote137 views7 answers
C++ convert to c online
C++