matematica discreta

#include <iostream>
#include <conio.h>

using namespace System;
using namespace std;


int n_div[100];

void validar(int*n)
{
    do
    {
        cout << endl << "Ingrese el numero de eventos : ";
        cin >> *n;
        system("cls");
    } while (*n <= 20);
}

void  primo(int *n ,  int *p) {
    int cont=0;

        for (int i = 1; i<= *n ; i++) {
            if (*n %i == 0) {
                cont++;
            }
        }
        if (cont <= 2) {
            *p = *n-1;
        }
        else *p = *n;

    }


void divisores(int *p,int *i , int *j  )
{

    int cont = 0;
    for (int f = 1; f <= *p; f++) {
        if (*p %f == 0) {
            n_div[cont] = f;//se guardo los divisores
            cont++;   // posicion del elemento

        }
    }

    int medio  = cont / 2; // hallar la posicion del medio

    *i = n_div[medio];  // numero de columnas
    *j = *p/ n_div[medio]; // numero de filas
}


void mapa(int *i, int *j)
{
    for (int f = 0; f < *i; f++) {
        for (int c = 0; c < *j; c++) {
            Console::SetCursorPosition(f, c);
            if (f % 2 == 0 && c % 2 == 0) {
                Console::ForegroundColor = ConsoleColor::White;
                cout << char(219);
            }
            if (f % 2 == 0 && c % 2 == 1) {
                Console::ForegroundColor = ConsoleColor::Blue;
                cout << char(219);
            }
            if (f % 2 == 1 && c % 2 == 0) {
                Console::ForegroundColor = ConsoleColor::Red;
                cout << char(219);
            }
            if (f % 2 == 1 && c % 2 == 1) {
                Console::ForegroundColor = ConsoleColor::Green;
                cout << char(219);
            }
        }
    }
    cout << endl;
}

void mapa_primo(int*p, int *n, int *i, int *j)
{
if (*p + 1 == *n) {
                for (int f = *i + 1; f >= *i; f--) {
                    Console::SetCursorPosition(0, *j);
                    for (int c = 1; c <= *i; c++) {
                        if (*j % 2 == 0) {
                            Console::ForegroundColor = ConsoleColor::White;
                            cout << char(219);}
                        else {
                            Console::ForegroundColor = ConsoleColor::Blue;
                            cout << char(219);}
            }
        }
    }
}
int main()
{
    int *p = new int; int *n = new int;  int *i = new int;   int *j = new int;
        validar(n);
        primo(n, p);
        divisores(p, i, j);
        cout << endl << endl;
        mapa(i, j);
        mapa_primo(p, n, i, j);
        _getch();

        main();
}