A Size That Is Part of the Type

1#include <iostream>
2#include <string>
3 
4template <typename T, int N>
5class FixedList {
6    T m_items[N];
7public:
8    FixedList(T fill) {
9        for (int i = 0; i < N; i++) {
10            m_items[i] = fill;
11        }
12    }
13    void set(int index, T value) { m_items[index] = value; }
14    int size() const { return N; }
15    void print() const {
16        for (int i = 0; i < N; i++) {
17            std::cout << "[" << m_items[i] << "]";
18        }
19        std::cout << "\n";
20    }
21};
22 
23int main() {
24    FixedList<int, 3> a(0);
25    FixedList<int, 5> b(7);
26    FixedList<std::string, 2> c("-");
27    a.set(1, 42);
28    c.set(0, "hi");
29    a.print();
30    b.print();
31    c.print();
32    std::cout << a.size() + b.size() + c.size() << "\n";
33    return 0;
34}