Passing C++ Arrays by Value
Just in case you needed to, you can wrap an array into a struct/class and pass it by value to a function:
template<typename T, int N>
struct array {
T value[N];
T & operator[](int i) { return value[i]; }
};
template<typename T, int N>
void passByValue(array<T, N> a) {
cout << "Value in function:" << endl;
for (int i = 0; i < N; i++) a[i] = 1, cout << a[i] << endl; // prints 1's
}
int main() {
const int N = 5;
array<int, N > a;
for (int i = 0; i < N; i++) a[i] = 0;
passByValue(a);
cout << "Value after function call:" << endl;
for (int i = 0; i < N; i++) cout << a[i] << endl; // prints 0's
return 0;
}
