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  1. Practice
  2. C++
  3. Introduction
  4. Arrays Introduction
  5. Discussions

Arrays Introduction

  • narutoitachi329 + 3 comments
    int main() {
  int n, i = 0;
  cin >> n;
  int a[n];
  for (; i < n; i++)
    cin >> a[i];
  for (; i >0; i--)
    cout << a[i- 1] <<" ";
  return 0;
}
    • JChiquin + 2 comments

      You shouldn't use arrays like that. In fact, a is initialized with the first value of n what is garbage, something like 39281233, because is initialized in compile time not execution time, for dinamic size you must use pointers and the keyword new or vector from std.

      • narutoitachi329 + 0 comments
        [deleted]
      • JChiquin + 0 comments

        Why does my comment have negative votes?

    • priyankavithani1 + 0 comments

      a[i-1]

      can you tell me how it is working?

    • anshup + 0 comments

      how this line is working i am not able to understand for (; i >0; i--) cout << a[i- 1] <<" ";