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

1 vote274 views2 answers
Find the Missing Number
C++
0 vote201 views1 answer
Call function from separate bash script
C++
0 vote196 views1 answer
Cuda copy memory
C++
3 votes186 views2 answers
Prints out the elements in the array c++
C++
-1 vote220 views2 answers
For c++
C++
0 vote189 views1 answer
Set the jth bit from 1 to 0
C++
0 vote212 views1 answer
Vector of strings initialization c++
C++
0 vote195 views1 answer
C++ print to standard error
C++
3 votes211 views1 answer
C++ initialize array with all zeros
C++
0 vote205 views1 answer
What is c++ file extension
C++