doubt on Dangling pointer

[sridhard2406]

Hi All,
I have a doubt on undrestanding Dangling pointers.Below I mentioned sample code. please let me know, my view on Dangling pointers is correct or not?
main( )
{
char *a,*b,*c;

a = (char *)malloc(40);
b = a;
c = b;
free(a);
/* now c is Dangling pointer*/
is it vorrect? if not please let know with Example program ?

Thanks
Sridhar.D

[weaknessforcats]

Yep. b is dangling also.

This is why there is grave danger in passing naked pointers throughout your code: You don't know when it's safe to free().