Question

Possible Duplicate:
Is array name a pointer in C?
C++ Static array vs. Dynamic array?

I’m learning C and I’m confused at what the difference is between the following two arrays:

int a[10];

and

int *b = (int *) malloc(10 * sizeof(int));

Just on the most basic level, what is the difference between these two?

Answer 1

int a[10];

is allocated on stack and is de-allocated as soon as the scope ends.

int *b = (int *) malloc(10 * sizeof(int));

is allocated on heap and is alive throughout the lifetime of the program unless it’s explicitly freed.