sentencia FOR

nclude <iostream>
using namespace std;

int main() {
  int i;
  for (i = 0; i < 10; i++) {
    cout << i << endl;
  }
  return 0;
}

A:

The problem is that you are using the wrong operator. You are using the assignment operator (=) instead of the increment operator (++). The assignment operator assigns the value of the right