When do you need large heap for Elasticsearch?

How do i declare an array statically, on a stack, and on a heap in c++?

• I need to write three functions in C++: one that declares a large array statically, one that declares the same large array on the stack, and one that creates the same large array from a heap. Each function has to be called at least 100,000 times and output the time required by each. So far I have this but I got really confused: #include <iostream> #include "stdafx.h" using namespace std; void StaticArray() { static int [100,000]; } void HeapArray() { int *intnode; //create a pointer intnode = new int[100,000]; //create a heap-dynamic variable delete intnode; } } system("pause"); return 0;

• Answer:

  You have the static version and the heap version fine, except for these problems: You forgot the NAME of the variable in the static version You used commas in the numbers. The compiler is guaranteed to choke on commas. To create it on the "stack", just declare it normally inside of a code block. E.g.: { // begin code block int variableName[100000]; // add to program stack // code code code and more code } // end code block, "pop" the program stack Any code block will work for this, even the function braces, so if you're putting it into a function, you don't need to add additional braces (although it doesn't hurt).