Passing an array as a Reference into a function not working - c++

Question

For my lab in school I was asked to generate random numbers and characters and pass it into a function template and then sort them after showing my work as unsorted first. I'm using visual studios as a requirement for my school, but my main issue is that it's compiling with no errors but when I run my program it's not passing my array to be sorted. I've been spending a lot of time trying to understand why it's not working any help would be very appreciated.
#include <iostream>
#include <cstdlib>
#include <ctime>
#include <algorithm>
using namespace std;
template <typename T>
void arrayIn(T arr[], int size, char word) {
if (word == 'd') {
sort(arr, arr + size, greater<>());
}
else {
sort(arr, arr + size);
}
return;
}
template <typename O>
void arr_out(O arr[], int size) {
int j;
for (j = 0; j < size; j++) {
cout << arr[j] << endl;
return;
}
delete[] arr;
}
int main(void) {
srand(time_t(NULL));
int size,i,j;
char word;
int *arr1;
char *arr2;
cout << "Enter in the size of the array: ";
cin >> size;
cout << "How would you like to sort in ascending or descending order?: ";
cin >> word;
arr1 = new int[size];
arr2 = new char[size];
if (arr1 == 0) {
cout << "memory allocation error";
system("pause");
exit(1);
}
cout << "The first array will sort intagers." << endl;
cout << "not sorted" << endl;
for (i = 0; i < size; i++) {
arr1[i] = rand() % 100 + 1;
cout << arr1[i] << endl;
}
arrayIn(arr1, size, word);
cout << "sorted" << endl;
arr_out(arr1,size);
if (arr2 == 0) {
cout << "memory allocation error";
system("pause`enter code here`");
exit(1);
}
cout << "the secound array will sort characters." << endl;
cout << "not sorted" << endl;
for (j = 0; j < size; j++) {
arr2[j] = rand() % (126 + 1 - 33) + 33;
cout << arr2[j] << endl;
}
arrayIn(arr2, size, word);
cout << "sorted" << endl;
arr_out(arr2, size);
system("pause");
return 0;
}

Answer 1

You have a very simple mistake in your arr_out function, which makes it only print the first element. Correct as follows (remove the line I commented out):
template <typename O>
void arr_out(O arr[], int size) {
int j;
for (j = 0; j < size; j++) {
cout << arr[j] << endl;
// return; // This will return after printing the first element!
}
delete[] arr;
}