Hey guys,

A few days ago I started coding in C++ so I've created an own task for me: Coding a rogue-like game.
Today I created a square where you can walk in:

Code:
#include <cstdio>
#include <ncurses.h>
#include <iostream>

using namespace std;

const int border_x = 20;            //border for the square
const int border_y = 20;

string Field[border_y][border_x];   //the field with your character/monsters..., global so every function can change it

void CreateStartField()             //Create the field without anything
{
    for (int i=0; i < border_y; i++)
    {
        for(int j=0; j < border_x; j++)
        {
            if ( (i==0) || (j==0) || (i==border_x-1) || (j==border_y-1) ) //Borders of the field
            {
                Field[i][j] = "*";                                        //signs for border
            }
            else
            {
                Field[i][j] = ".";                                        //signs for field
            }
        }
    }

}


void KeyPress(int &act_x, int &act_y)   //reads the keys in you press
{

    int Direct;            // the direction

    initscr();
    keypad(stdscr, TRUE);


    Direct = getch();

    switch (Direct)                 // checks if your keypress is "useful"
    {
        case KEY_RIGHT:
            if (act_x < border_x-2)
            {
                Field[act_y][act_x] = ".";
                act_x++;
                Field[act_y][act_x] = "A";
                break;
            }
            else
                break;
        case KEY_LEFT:
            if (act_x > 1)
            {
                Field[act_y][act_x] = ".";
                act_x--;
                Field[act_y][act_x] = "A";
                break;
            }
            else
                break;
        case KEY_UP:
            if (act_y > 1)
            {
                Field[act_y][act_x] = ".";
                act_y--;
                Field[act_y][act_x] = "A";
                break;
            }
            else
                break;
        case KEY_DOWN:
            if (act_y < border_y-2)
            {
                Field[act_y][act_x] = ".";
                act_y++;
                Field[act_y][act_x] = "A";
                break;
            }
            else
                break;
    }


}



void PrintField()           //prints the actual field
{
    for (int y=0; y < border_y; y++)
    {
        for (int x=0; x < border_x; x++)
        {
            cout << Field[y][x] << " ";
        }
        cout << "\n\r";
    }

}

int main()
{

    CreateStartField();

    int act_x = 1;                  //actual coordinates of your character
    int act_y = 1;

    Field[act_y][act_x] = "A";
    PrintField();


    while (1)
    {
        KeyPress(act_x, act_y);
        PrintField();
    }


}
My idea is, that at the end of the game, everything like your character, monsters and so on you will find at the "Field Array".
Before I continue with the next steps:
Can you give me any hints what I can do better?
And: Before the "game" starts, you have to press any key. How do I fix it, that the display shows it immediately at startup?
How can I refresh the window, so that the old display will be deleted (I hope you understand what I want to say)


PS: Sorry for my bad English, but it is not my mother tongue.