various pointer

ptrex.c

#include <stdlib.h>
#include <stdio.h>

int foo(int x) { return 1; }
int main(void) {
	int *ptr[2];
	int (*ptr2)[2];
	int(*ptr3)(int);
	int x = 10;
	int arr[] = { 1, 2, 3, 4};
	int arr2[3][2] = { { 1, 2 }, { 3, 4 }, { 5, 6 } };		
	//ptr is size 2 array of int pointer
	ptr[0] = &x;
	ptr[1] = arr;
	ptr[0] = arr2[0]; //ok?
	//ptr2 is pointer of size two int array (n * 2 2d array)
	ptr2 = arr2;	
	//ptr3 in function pointer
	ptr3 = foo;
	return 0;
}