Shifting value i multi dimensional array C++ - c++

Question

I want to shift value in multi dimensional array, i try but its not working at all and am also confused within logic.
here what i want to do
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
and let i pass 1, 2 so it should delete 5 from array and shift all elements.
Expected Output:
1, 2, 3,
4, 6, 7,
8, 9, 0
Here is my code.
#include <iostream>
void display(int arr[][3], int size)
{
std::cout << "\nDisplay of array:\n";
for (int i = 0; i < size; i++) {
for (int j = 0; j < size; j++) {
std::cout << i << " " << j << " : " << arr[i][j] << std::endl;
}
}
return;
}
void insert(int arr[][3], int size)
{
std::cout << "\nInserting element in an array:\n";
int pos, num;
std::cout << "Enter new value to be inserted: ";
std::cin >> num;
std::cout << "Enter the position where you wanted to inserted it: ";
std::cin >> pos;
/*for (int i = size - 2; i >= pos; i--) {
arr[i+1] = arr[i];
}*/
//arr[pos] = num;
display(arr, size);
}
void delete_ele(int arr[][3], int size)
{
std::cout << "\nDeleting an array:\n";
int posX, posY;
display(arr, size);
std::cout << std::endl;
std::cout << "Enter the X pos where you wanted to delete element: ";
std::cin >> posX;
std::cout << "Enter the Y pos where you wanted to delete element: ";
std::cin >> posY;
const int s = 3;
int newArr[s][s];
int x = 0, y = 0;
bool t = false;
for (int i = 0; i < size; i++) {
for (int j = 0; j < size; j++) {
if (i == posX && j == posY) {
t = true;
continue;
}
newArr[x][y] = arr[i][j];
y++;
}
if (t) {
continue;
}
x++;
}
display(newArr, size);
}
int main(void)
{
// size of array.
const int size = 3;
//Decleration of arrays
int arr[size][size] = {
{1, 2, 3},
{4, 5, 6},
{7, 8, 9}
};
int arr2[size][size] = {
{1, 2, 3},
{7, 8, 9}
};
// Delete an array basse on position.
delete_ele(arr, size);
// Insert an array by shifting..
insert(arr2, size);
return 0;
} // end of main.
Thanks