#include <iostream>

int cuenta(int* ini, int* fin, int v) {
   int res = 0;
   for (int* p = ini; p < fin; ++p) {
      if (*p == v) {
         res += 1;
      }
   }
   return res;
}

int main( ) {
   int a[5] = { 3, 1, 4, 1, 6 };
   std::cout << cuenta(&a[0], &a[0] + 5, 1) << "\n";
}