thay_the_am_bang_khong.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];
  }
  for (int i = 0; i < n; i++) {
    if (a[i] < 0) a[i] = 0;
  }
  cout << "Mang a sau khi thay the:\n";
  for (int i = 0; i < n; i++) {
    cout << a[i] << ' ';
  }
}