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pointers:
Learn about dynamic memory allocation.
1.malloc
int *p;
p=malloc(1000); //malloc (size); p is an array of
500 elements.
default values are garbage values
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2.
p=calloc(10,sizeof(int)
//calloc (number of elements, size) takes two
arguments. here p is array of 10 elements. default values are
zeroes.
3.free(p)
//
frees the memory allocated.
4.Learn about far, huge, near pointers and their memory size.
ordinary pointer occupies 2 bytes. far pointer 4 bytes. |
5..Dangling
pointers :- Pointers which are created but not assigned any
reference .
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