C / C++ / MFC

int a[5]={10,20,30,40,50};
int b[]={1,2,3,4,1000};
int[500][500];
char names[100][200][24][50][50];
int array[20];

void SomeFunc()
{
   //On the stack (1,000,000 bytes!! Be careful!):
   int My500x500Array[500][500];
...
}


void SomeFunc()
{
   //On the heap (check return value or handle memory exception
   //    to make sure the memory was allocated!):
   int (*My500x500Array)[500] = new int[500][500];
...
   delete[] My500x500Array;
}

Mark Salsbery
Microsoft MVP - Visual C++

Mark Salsbery wrote:

Make sure you have enough stack space for the stack-based variable -
it's 1000000 bytes and the default stack size is generally 1MB.

progDes wrote:

The stack size on my mashine is 1 mB

Mark Salsbery
Microsoft MVP - Visual C++

// Outside of a function/method/object is implicitly static

// This is NOT on the stack
int a[10000];

void SomeFunc()
{
...
}

// Inside a function/method and marked static

void SomeFunc()

{
   // This is NOT on the stack
   static int a[10000];
...
}

// Inside a function/method and NOT marked static

void SomeFunc()
{
   // This is an "automatic" variable
   // This IS on the stack!
   int a[10000];
...
}

Mark Salsbery
Microsoft MVP - Visual C++

way 1:
 CDialog dlg;

way 2
 CDialog *p;
 p=new CDialog