Arrays aren't behaving as I'm expecting - c++

Question

Pointers are still a little confusing to me. I want the split function to copy negative elements of an array into a new array, and positive elements to be copied into another new array. A different function prints the variables. I've included that function but I don't think it is the problem. When the arrays are printed, all elements are 0:
Enter number of elements: 5
Enter list:1 -1 2 -2 3
Negative elements:
0 0
Non-Negative elements:
0 0 0
I assume that the problem is that in the split function below i need to pass the parameters differently. I've tried using '*' and '**' (no quotes) for passing the parameters but I get error messages, I may have done so incorrectly.
void split(int alpha[], int bravo[], int charlie[], int aSize, int bSize, int cSize) {
int a = 0;
int b = 0;
for (int i = 0; i < aSize; ++i) {
if (alpha[i] < 0) {
alpha[i] = bravo[a];
++a;
}
else {
alpha[i] = charlie[b];
++b;
}
}
if (a + b != aSize) {
cout << "SOMETHING HAS GONE HORRIBLY WRONG!";
exit(0);
}
}
my main function (all arrays are required to be pointers):
int num_elements;
cin >> num_elements;
int * arr1 = new int[num_elements];
int x;
cout << "Enter list:";
for (int i = 0; i < num_elements; ++i) {
cin >> x;
arr1[i] = x;
}
int y = 0;
int z = 0;
count(arr1, num_elements, y, z);
int * negs = new int [y];
int * nonNegs = new int[z];
split(arr1, negs, nonNegs, num_elements, y, z);
cout << "Negative elements:" << endl;
print_array(negs, y);
cout << endl;
cout << "Non-Negative elements:" << endl;
print_array(nonNegs, z);
cout << endl;
All functions:
void count(int A[], int size, int & negatives, int & nonNegatives) {
for (int i = 0; i < size; ++i) {
if (A[i] < 0) {
++negatives;
}
if (A[i] >= 0) {
++nonNegatives;
}
}
}
void split(int alpha[], int bravo[], int charlie[], int aSize, int bSize, int cSize) {
int a = 0;
int b = 0;
for (int i = 0; i < aSize; ++i) {
if (alpha[i] < 0) {
alpha[i] = bravo[a];
++a;
}
else {
alpha[i] = charlie[b];
++b;
}
}
if (a + b != aSize) {
cout << "SOMETHING HAS GONE HORRIBLY WRONG!";
exit(0);
}
}
void print_array(int A[], int size) {
for (int i = 0; i < size; ++i) {
cout << A[i] << " ";
}
}
All help is appreciated.
EDIT: I apologize for my unclear question, I was wondering how to get my arrays to behave as I want them to.

Answer 1

Array is behaving correctly as per instruction :), you are doing minor mistake (may be overlook) in split function. I have commented out the statement and given reason of problem, please correct those two line of code, rest is fine.
void split(int alpha[], int bravo[], int charlie[], int aSize, int bSize, int cSize) {
int a = 0;
int b = 0;
for (int i = 0; i < aSize; ++i) {
if (alpha[i] < 0) {
//alpha[i] = bravo[a];// here alpha is your source array, don't overwrite it
bravo[a] = alpha[i];
++a;
}
else {
//alpha[i] = charlie[b];// here alpha is your source array, don't overwrite it
charlie[b] = alpha[i];
++b;
}
}
if (a + b != aSize) {
cout << "SOMETHING HAS GONE HORRIBLY WRONG!";
exit(0);
}
}