key_gen

#include <iostream>
#include <vector>
#include <time.h>
#include <cstdlib>
#include <string>
#include <fstream>
#define len1 5
#define ull unsigned long long
#define ush unsigned short
#define ulg unsigned long
using namespace std;
ofstream fout("text.txt");

int main()
{
    ull x;
cout<<"nr coduri:";cin>>x;
srand(time(NULL));
vector <char> alfa;
for (char let='A';let<='Z';let++)
alfa.push_back(let);
for (char nr='0';nr<='9';nr++)
alfa.push_back(nr);
for (ulg c=0;c<x;c++)
{
   for (ush i=0;i<len1;i++) {
    for (ush j=0;j<len1;j++)
   fout<<alfa.at(rand()%(alfa.size()));
   if (i!=4)
   fout<<'-';
   }
   fout<<endl;
}
    return 0;
}