why is loop stuck - c++

Question

Only problems remaining now are that my choice while loop is infinite since the break statements dont seem to be breaking out of the loop at all, so the program doesn't read the answer loop. Also, "Invalid Entry" displays every other incorrect input instead of displaying everytime an invalid character is entered
#include <iostream>
#include <cctype>
using namespace std;
int getAges(int age, const int SIZE);
char getChoice();
void displayInOrder(int numbers[], const int SIZE, char choice);
void displayInReverse(int numbers[], const int SIZE, char choice);
int main()
{
const int SIZE = 5;
int numbers[SIZE] = { 1, 2 ,3 ,4, 5 };
char answer = 0;
int age = 0;
char choice = 0;
while (choice = getChoice())
{
if (toupper(choice) == 'O')
{
displayInOrder(numbers, SIZE, choice);
break;
}
else if (toupper(choice) == 'R')
{
displayInReverse(numbers, SIZE, choice);
break;
}
else
{
cout << "Invalid entry! - Must be O or R\n\n";
break;
}
}
while (toupper(answer) == 'Y')
{
system("cls");
age = getAges(age, SIZE);
choice = getChoice();
displayInOrder(numbers, SIZE, choice);
displayInReverse(numbers, SIZE, choice);
cout << "Run program again (Y or N)? ";
cin >> answer;
if (toupper(answer) == 'N')
{
exit();
}
}
return 0;
}
int getAges(int age, const int SIZE)
{
cout << "Enter " << SIZE << " ages: \n\n";
cin >> age;
cout << endl;
cin >> age;
cout << endl;
cin >> age;
cout << endl;
cin >> age;
cout << endl;
cin >> age;
cout << endl;
return age;
}
char getChoice()
{
char choice;
cout << "How do you want to see the ages displayed? \n\n Enter O for In Order, or R for In Reverse.\n\n";
cin >> choice;
return choice;
}
void displayInOrder(int numbers[], const int SIZE, char answer)
{
cout << "Here are the ages in order: \n\n";
for (int i = 0; i < SIZE; i++)
{
cout << numbers[i] << endl;
}
}
void displayInReverse(int numbers[], const int SIZE, char answer)
{
cout << "Here are the ages in reverse order: \n\n";
for (int i = SIZE - 1; i >= 0; i--)
{
cout << numbers[i] << endl;
}
}

Answer 1

1."Invalid Entry" displays every other incorrect input: you have a getChoice() call inside the while loop, here:
else
{
cout << "Invalid entry! - Must be O or R\n\n";
choice = getChoice();
}
which is followed by a getChoice() call in the
while (choice = getChoice())
Hence the previous getChoice() is not processed.
2."I'm not sure how to close the program if the user enters N for answer", You should think about if you can ever reach the second while loop and where you are setting the answer variable or basically where you are taking the user input for ending the program? You should see if it can it be taken care of in the first while loop ?