#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <ncurses.h>
#include <sys/ioctl.h>

void sig_handler(int sig) {
	(void)sig;

	endwin();
	exit(0);
}

int main(void) {
	signal(SIGINT, sig_handler);
	signal(SIGTERM, sig_handler);

	struct winsize ws;
	if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) < 0)
		return 1;

	initscr();
	noecho();
	curs_set(0);
	timeout(0);

	size_t middle = ws.ws_row / 2;

	size_t args = 0;
	while (1) {
		if (args > ws.ws_col) {
			refresh();
			clear();
			args = 0;
		}

		int val1;
		read(STDIN_FILENO, &val1, sizeof(val1));

		int k = val1 * (middle - 5) / INT_MAX;
		mvprintw(middle + k, args, "@");

		args++;
	}
}