generadores de Z25 con mult

#include <iostream>
#include <array>
using namespace std;

void generar (int a)
{
    int c=1;
    int primer = a;
    cout << a;
    a = a*primer%25;
    while (a != primer)
    {
        cout << ", " << a;
        a = a*primer%25;
        c++;
    }
    cout << "}\n";
    cout << "|<" << primer << ">| = " << c << "\n\n";
}

int main()
{
    int n=0;
    array<int,20> z25;
    for (int i=0; i<20; i++)
    {
        n++;
        if(n % 5 != 0)
            z25.at(i) = n;
        else
            i--;
    }

    for (int i=0; i<20; i++)
    {
        cout << '<' << z25.at(i) << "> = {";
        generar(z25.at(i));
    }

}