function greet(name) {
  return `Hello, ${name}!`;
}

console.log(greet("World"));

def fibonacci(n):
    a, b = 0, 1
    for _ in range(n):
        yield a
        a, b = b, a + b

print(list(fibonacci(10)))

<div class="container">
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
</div>

const [count, setCount] =
  useState(0);

return (
  <button
    onClick={() =>
      setCount(c => c + 1)}>
    Clicks: {count}
  </button>
);

int binarySearch(int[] a,
    int target) {
  int lo = 0, hi = a.length-1;
  while (lo <= hi) {
    int mid = (lo+hi) / 2;
    if (a[mid] == target)
      return mid;
    else if (a[mid] < target)
      lo = mid + 1;
    else hi = mid - 1;
  }
  return -1;
}

#include <algorithm>
#include <vector>
using namespace std;

int main() {
  vector<int> v =
    {5, 2, 8, 1, 9};
  sort(v.begin(), v.end());
  return 0;
}