Are arrays ALWAYS passed by Reference?

Question

In this example:

void f(int myArr[],int sz){
for(int i=0;i<sz;i++)
myArr[i]=i+1;
}
int main(){
int arr[3]={68,52,47};
f(arr,3);
for(int i=0;i<3;i++)
cout<<myArr[i];
}

The output is: 123

Answer 1

Yes, c-style arrays are always passed by reference.

However, if you use the std::array class introduced in C++11 (declared in the <array> header), you have more control over how arrays are passed:

void func1(std::array<int, 10> arr) {
// array is passed by value
}

void func2(std::array<int, 10>& arr) {
// array is passed by reference
}