Error with getch() - c++

Question

void move_player(int& x, int& y) {
int old_x, old_y, new_x, new_y;
switch (getch()) {
case 0x31: // miscare stanga
if (current_x>min_x) {
old_x=x;
new_x=x-1;
if (y==1) {
path[1][old_x]=' ';
path[1][new_x]=player;
system("cls");
for (int y=0;y<3;y++) {
for (int x=0;x<20;x++) {
cout << path[y][x];
}
cout << endl;
}
} else if (y==2) {
path[2][old_x]='_';
path[2][new_x]=player;
system("cls");
for (int y1=0;y1<3;y1++) {
for (int x1=0;x1<20;x1++) {
cout << path[y1][x1];
}
cout << endl;
}
}
}
break;
case 0x32:
if (x<max_x) {
old_x=current_x;
new_x=current_x+1;
if (y==1) {
path[1][old_x]=' ';
path[1][new_x]=player;
system("cls");
for (int y2=0;y2<3;y2++) {
for (int x2=0;x2<20;x2++) {
cout << path[y2][x2];
}
cout << endl;
}
} else if (y==2) {
path[2][old_x]='_';
path[2][new_x]=player;
system("cls");
for (int y3=0;y3<3;y3++) {
for (int x3=0;x3<20;x3++) {
cout << path[y3][x3];
}
cout << endl;
}
}
}
break;
case 0x33:
if (y>min_y) {
old_y=y;
new_y=y-1;
path[old_y][x]='_';
path[new_y][x]=player;
system("cls");
for (int y4=0;y4<3;y4++) {
for (int x4=0;x4<20;x4++) {
cout << path[y4][x4];
}
cout << endl;
}
}
break;
case 0x34:
if (y<max_y) {
old_y=y;
new_y=y+1;
path[old_y][x]=' ';
path[new_y][x]=player;
system("cls");
for (int y5=0;y5<3;y5++) {
for (int x5=0;x5<20;x5++) {
cout << path[y5][x5];
}
cout << endl;
}
}
}
x=new_x;
y=new_y;
}
This is the function for moving a player in a two dimensional space.
It is represented by an array which I declared as char path[3][20] and the player can only move in path[1][20] or path[2][20]. The first layer of the array is just represented by a bunch of lines, kind of setting the boundaries for the map. Btw, the player starts at path[2][0] or lower left corner.
(I can't move it left or down in the starting position, only right or up)
The problem is, that when I run this, I can move it fine just once right, but then when I try it to move left or right it does nothing, and when I try to move it up or down the console just frezees and it quits.
How can I solve it?