#include <stdio.h>

int size(int n, int arr[n][n])
{
    printf("size: %lu\n", sizeof(arr));
    printf("[0][0]: %d\n", arr[0][0]);
    printf("[0][1]: %d\n", arr[0][1]);
    printf("[1][0]: %d\n", arr[1][0]);
    printf("[1][1]: %d\n", arr[1][1]);
}

int
main(void)
{
    int arr[2][2] = {1, 2, 3, 4};
    size(2, arr);
    size(1, arr);
    return 0;
}