Differenece between stack overflow and heap overflow

Question

Consider the code snippets:

i)

void foo()
{
    while(1)
    int *i= new int;
}

 

ii)

void foo()
{
    foo();
}

 

Choose the ocrrect statements:

A. Both shows stack overflow

B. Both shows heap overflow.

C. i shows stack overflow while ii shows heap overflow

D. i shows heap overflow while ii shows stack overflow

Answer 1

Stack overflow is for number of elements , where heap overflow going beyond range.

Stack overflow- Say An array can store 3 elements, and we want to put 4 elements in it, then it is stack overflow.

Heap overflow-If there are elements write beyond range, then it is heap overflow.

Ans B) Both are heap overflow.

PS-[Though we think there are unlimited space in heap, but actually no computer device can store unlimited space.So, heap overflow actually happens when there is infinite calling of function.]

Comments

Accrding to wikipedia,

https://en.wikipedia.org/wiki/Stack_overflow

When a program attempts to use more space than is available on the call stack the stack is said to overflow

1. Inifnite recursion

int foo() 
{
     return foo();
}

2.Very large stack variables

int foo() 
{
     double x[1048576];
}

So I think (i) is stack overflow

---

yes, that I thought too.

http://stackoverflow.com/questions/4700998/explain-stack-overflow-and-heap-overflow-in-programming-with-example

but, heap overflow is " it asks for one too few bytes from the heap and then writes beyond the end. "

that is why I thought it will be heap overflow.