#include <iostream>

#include <vector>

#include <cmath>

#include <algorithm>

#include <numeric>

double myfunction(double num) {

    return exp(num);

}

template <typename T>

void softmax(const typename::std::vector<T> &v, typename::std::vector<T> &s){

    double sum=0.0;

    transform(v.begin(), v.end(), s.begin(), myfunction);

    sum=accumulate(s.begin(), s.end(), sum);

    for(size_t i=; i<s.size(); ++i)

        s.at(i)/=sum;

}

int main() {

    double a[]={1.0, 3.0, 2.0};

    std::vector<double> v_a(a, a+sizeof a/sizeof a[]), v_b(v_a);

    std::vector<double>::const_iterator it=v_a.begin();

    for(; it!=v_a.end(); ++it) {

        std::cout<<*it<<" ";

    }

    std::cout<<std::endl;

    softmax(v_a, v_b);

    it=v_b.begin();

    for(; it!=v_b.end(); ++it) {

        std::cout<<*it<<" ";

    }

    std::cout<<std::endl;

    return ;

}