Nonblocking ncurses: prevent stdout

Question

what I am trying to do and the problem

I am trying to use nonblocking ncurses getch() and output data to stdout. The problem is that cnurses also writes to stdout. It writes [?1l>[?1h=[17;1H[?1049l[23;0;0t tens of thousands of times.

What I have tried

I tried the answer from this similar question, however I need to use the nodelay-function which only allows WINDOWs but not SCREENs.

I tried to temporarely disable stdout with two solutions from here, however it had no effect

source code

#include <ncurses.h>
#include <iostream>
using namespace std;
int get_input(void)
{
    WINDOW *w = initscr();
    raw();
    nodelay(w, TRUE);
    keypad(stdscr, TRUE);
    cbreak();
    noecho();
    int input = getch();
    endwin();
    return input;
}
int main(){
    while(true){
        int input = get_input();
        if(input != -1){
            cout<<input;
            exit(0);
        }
    }
}

compile on linux with g++ -lncurses file.cpp