Use/Misuse of Pointers

[ct]

aah..I got it now...dumb me..

1. void fn(){
2. int var1;
3. {
4. int var2;
5. }
6. // var2 is no longer valid here
7. }

and this is a neat operation, I had nearly forgotten about the block scope operator..thanx a lot wysota...

I will definitely use pointers when I feel necessary..ther very point I was asking this question was because I get all these notions from my classmates who are afraid of the site of pointers....

[wysota]

and this is a neat operation, I had nearly forgotten about the block scope operator..thanx a lot wysota...

Sure, but beware of the fact that this doesn't mean the variable is deallocated when it goes out of the inner scope. I'd assume it to be very compiler dependent, because the memory may be freed only when returning from the function, as this is done automatically by modifying the stack pointer in the CPU to reference the previous stack frame so no additional moves of the pointer are needed. So probably the memory is really freed when going out of inner scope on platforms that have a limited stack space. Otherwise it's just waste of CPU power, so the whole stack frame is probably freed in one go.