#include <iostream>
#include <fstream>
#include <string>
#include <sstream>

 int nodForTwo( int m, int f) {
     while (m != f) {
         if (m > f) {
             m = m - f;
         }
         else {
             f = f - m;
         }
     }
     return m;
 }
 int nod(int* a) {
     int k, n = 0;
     k = nodForTwo(a[1], a[2]);
     for (int i = 3; i < n; i++) {
         k = nodForTwo(k, a[i]);
     }
     return k;
 }
 int saveFile(int k) {
     std::ofstream fout("D:\lab rab\2.4(c++).txt");
     std::cout << "Наибольший общий делитель :" << k;
}


int main() {
    setlocale(LC_ALL, "Russian");
    int n, k;
    int a[n];
    std::ifstream fin("D:\lab rab\2_4.txt");
    for (int i = 0; i <= n; i++) {
        fin a[i];
    }
    fin.close();
    k = nod(a);
    saveFile(k);
}