initialize array size from another array value

Question

#include 
using namespace std; 

const int vals[] = {0, 1, 2, 3, 4}; 

int newArray[ vals[2] ]; //\"error: array bound is not an integer constant\"

         


        

Answer 1

The C++ compiler can only allocate an array with a size known at compile time. If you want to allocated a variable size piece of memory, use the new operator.