"Genetic Algorithm" from someone's StackOverflow question

genetic.cpp

// http://stackoverflow.com/questions/13552057/c-vector-access-violation-when-trying-to-write

#include <iostream>
#include <vector>

using namespace std;

class gen {
public:
    int basa_biner;
};

class chromosome {
public:
    int chromosome_id;
    int fitness;
    vector<gen*> gen_chromosome;
    chromosome(int chromosome_length) : 
        gen_chromosome(chromosome_length) 
    { 
        for(int i=0;i<chromosome_length;i++) { 
            gen_chromosome[i] = new gen(); //gen_chromosome[i]->basa_biner = rand()%2; 
        } 
    } 
    int get_chromosome_size() {
        return gen_chromosome.size();
    } 
};

class network {
public:
    network(int number, int hidden) {}
    void init_network(int hidden) {}
    void feedforward(float* input) {}
    int error_function(float* input) {}
    void getweight(float* tempWeight) {}
};

class population {
private:
    vector<chromosome*> chromosome_population;
    vector<network*> gennet;
    int population_number;

public:
    population(int numberOfPopulation, float input[], 
        float desired_output[], int hiddenNeuronNumber)
    : chromosome_population(numberOfPopulation)
    , gennet(numberOfPopulation)
    {
        population_number = numberOfPopulation;
        float tempWeight[1200];
        int chromosome_length;
        for(int i=0;i<population_number;i++)
        {
            chromosome_population[i] = new chromosome(1200);
            gennet[i] = new network(3,hiddenNeuronNumber);
        }
        for(int i=0;i<population_number;i++)
        {
            chromosome_length = chromosome_population[i]->get_chromosome_size();
            chromosome_population[i]->chromosome_id = i;
            cout << "Population no : " << 
                chromosome_population[i]->chromosome_id << endl;
            gennet[i]->init_network(hiddenNeuronNumber);
            gennet[i]->feedforward(input);
            cout << "error : " <<
                gennet[i]->error_function(desired_output) << endl;
            gennet[i]->getweight(tempWeight);
            for(int j=0;j<chromosome_length;j++)
            {
                chromosome_population[i]->fitness =
                    (1-gennet[i]->error_function(desired_output))*100;
                chromosome_population[i]->gen_chromosome[j]->basa_biner =
                    tempWeight[j];
            }
            cout<<endl<<"fitness : "<<chromosome_population[i]->fitness<<endl;
        }
        cout<<endl;
        cout<<"Population : ";
        for(int i=0;i<population_number;i++)
        {
           chromosome_length = chromosome_population[i]->get_chromosome_size();
           cout<<"Population no : "<<i<<" ";
           for(int j=0;j<chromosome_length;j++)
           {
              cout << chromosome_population[i]->gen_chromosome[j]->basa_biner;
           }
           cout<<endl;
        }
        cout<<endl;
    }
};

int main()
{
    float input[200];
    float output[200];
    population(200,input,output,200);
}