I want to have an array that holds the number of enemies in the game. Except I have no idea what the user is going to choose for that number..........I need this array to be global however beause it is needed over many functions.......how could I go about doing this??
I am lost
Sounds like you need dynamic memory not a global. You cannot make an array if you do not know its size as a compile time constant without dynamic memory.
Free the weed!! Class B to class C is not good enough!!
And the FAQ is here :- http://faq.cprogramming.com/cgi-bin/smartfaq.cgi
Simply because the variable is dynamic does not mean that it cannot be global.
Look up in your C++ book the 'new' keyword. Also, you should consider not making the variable global. This goes against the OO ideals and is simply bad style.
#include <iostream>
int *ptr_to_no_of_enemies = 0;
int main()
{
int no_of_enemies = 0;
std::cout << "Enter the number of enemies : ";
std::cin >> no_of_enemies;
ptr_to_no_of_enemies = new int[no_of_enemies];
/* you are dynamically creating an array and passing the starting
address to a pointer which is global. Using this pointer, you
can work with the contents of the array
*/
// call all your functions out here.. and get your job done
/*
please ensure that you free the memory allocated to create the
array dymanically
*/
delete [] ptr_to_no_of_enemies;
return 0;
}
PS: As mentioned by others, its preferable you don't create a global variable and allow that variable to point to a dynamically allocated array
Have a wonderful day.... and keep smiling... you look terrific that way
signing off...
shiv... as i know him
shiv_tech_quest for the example...............I wouldn't use global variables if I knew of another way to do it
Jeff Paddon
Undergraduate Research Assistant
Physics Department
St. Francis Xavier University
