C++: Why does ncurses getch() appear to be blocking output, and how do I fix it?

I am currently building Tetris on the command line, and I'm working with getch() to recieve input without a deliminating character and without pausing the code to take input. However, when I enable the function with initscr(), all my output is lost.

#include <ncurses.h>
#include <iostream>

using std::cout;
using std::endl;

//created variables, set up, etc etc

int main(){

  initscr();
  cbreak();
  keypad(stdscr, TRUE);
  noecho();

  while (true){
    cout << "hello" << endl; //complex things are printed here
    int input;
    while (true){
      input = getch();
      if (input == -1){
        break;
      } else {
        return 1; //my initial goal was just to get getch() to work, so the input reponse is to end the program
      }
    }
    cout << "goodbye" << endl; //other complex things are printed here
  }
  return 0;
}

Without initscr() turned on, all my output printed (but getch() didn't work). With it, I get a blank screen. Why is this happening, and how can I fix it?