trung_binh_cong_cac_so_le.cpp

#include <bits/stdc++.h>
using namespace std;

int main() {
  int n, a[100];
  cout << "Nhap n: ";
  cin >> n;
  for (int i = 0; i < n; i++) {
    cout << "Nhap a[" << i << "] = ";
    cin >> a[i];
  }
  int sum = 0, cnt = 0;
  for (int i = 0; i < n; i++) {
    if (a[i] % 2 == 1) {
      sum += a[i];
      cnt++;
    }
  }
  cout << "Trung binh cong cac so le: " << (float) sum / cnt << '\n';
}