Dev - C++ - Calcular el valor máximo y el mínimo de los elementos de un vector

#include <iostream>

#include <cstdlib>

#include <ctime>

using namespace std;

int random();

int maximo(int v[], int n);

int minimo(int v[], int n);

void imprimir(int v[], int n);

int main()

{

    int n, max, min;

    srand(time(NULL));

    do {

        cout << "\nTamanio del vector: "; cin >> n;

        if (n < 1 || n > 20)

            cout << "\nDebe estar en el rango de 1 a 20" << endl;

    } while (n < 1 || n > 20);

    int v[n];

    for (int i = 0; i < n; i++)

        v[i] = random();

    max = maximo(v, n);

    min = minimo(v, n);

    cout << "\nVector: "; imprimir(v, n);

    cout << "\nMaximo: " << max;

    cout << "\nminimo: " << min << endl;

    return 0;

}

int random()

{

    return rand() % 100 + 1;

}

int maximo(int v[], int n)

{

    int max;

    for (int i = 0; i < n; i++)

        if (i == 0 || max < v[i])

            max = v[i];

    return max;

}

int minimo(int v[], int n)

{

    int min;

    for (int i = 0; i < n; i++)

        if (i == 0 || min > v[i])

            min = v[i];

    return min;

}

void imprimir(int v[], int n)

{

    for (int i = 0; i < n; i++)

        cout << v[i] << " ";

}

int n, max, min;

    // etc ... etc...

     int v[n];