Hi! Now that I'm (at last) starting to deal better with vc++, I go back to more fundamental problems. I have a function (member of a class, but whatever) dealing with an array. I would like, in this function, to have a memory that keeps track of the array as it was in the last call of the function. Typically, if my variable had been an int, i would have declared a static int in the function, and saved the old value in that variable. But when it comes to an array, it does not work anymore! i tried: static int arr[CONST]; But that does not seem to work (I guess that the static refers to a pointer to int, or some strange stuff related to how is declared an array in c++). Someone who knows how I can tell my computer to consider the CONTENT of the array as static? Thanks a lot for any help!

The definition that you show is correct and should work. It doesn't matter if it's an array or a scalar variable. Possibly VC++ doesn't implement this correctly, but I doubt that is the problem. Try the following program to see if it works for you in VC++ (I ran it on a linux box and you can see the ouptut below). #include stdio.h #define CONST 5 void myfunc(int); void main(void) { myfunc(2); myfunc(5); } void myfunc(int increment) { static int arr[CONST]; int i; printf("BEFORE: "); for (i=0; i printf("%d ",arr[i]); } printf("\n"); for (i=0; i arr[i] += increment; } printf("\n\nAFTER: "); for (i=0; i printf("%d ",arr[i]); } printf("\n\n\n"); } OUTPUT: BEFORE: 0 0 0 0 0 AFTER: 2 2 2 2 2 BEFORE: 2 2 2 2 2 AFTER: 7 7 7 7 7

As you may have expected, you're perfectly right. And I also found why it was not working (I fell quite ridicullous about it, by the way)... I had several calls (say : call A, call B, call C, call D) to that function in a loop. I was stupidly expecting the function to keep a memory of an array (in a static int[]), and that the memory saved in the call A would be kept until the next call A. Which is obviously not really clever, for the other calls overwrote it. Now I did it in a cleaner way. And I achieved what I wanted to. Thanks a lot!

Also remember, that your Class may have more than one instance, but all of them write to the same static memory. Use a class member for cleaner code. You can also make class members static, even function members.