Can you declare an array with no size?

Question

i have an idea on how to implement an array in my hailstone program, but I would like to declare it first as a function prototype before giving it a size. The size will be based on how many times the hailstone sequence runs. Any help would be much appreciated.

v/r

Sherwin Slaughter

Answer 1

In C++ include <vector> or <list>. It allow you to create dynamic, resizable "array". Details are availible on C++ references.

If you know exact size of array in some moment you'll can simply declare:
int *array = new int[size];

When array won't be needed anymore you can clear memory:
delete [] array;

Answer 2

var[] Array_name;

That should do the trick

Answer 3

@Aaron,

Thank you.

Answer 4

@Adam Emieljaniuk,

I'll look into the C++ references as well. Thank you.