C Programming - Pointers - Discussion

Because pointer indicate the address and point out that point. So the char*p indicate that point p.

Thanks kavya

Please explain why we use a pointer.

With real time example.

Plz?

The work of malloc function----->

> Malloc function allocate a fixed size block of memory from the heap and retuns a void type of pointer to it.
> Now we wont to store char type value in that memory so we have to convert the void type pointer to char type that's why (char *) is used to typecast the void pointer to char type.

The diff. between malloc and calloc------->
> syntaxt : data-type *p=(data-type *)malloc(size_t size);
> Malloc function allocates the a fixe size block of memory from the heap.
>syntaxt : data-type *p=(data-type *)calloc(size_t nsize,size_t size);
>Calloc function allocates the a size of (nsize *size) variable size block of memory from the heap.

I want difference for pointer in c and c++?

Thanx kavyasree & mahesh........

Thanks Kavyasri

Its very much simple many people have discussed in a lengthy way:

Understand 1st statement char*p, it means it stores the address of p let us its address is 1000. It means 1000---->p, clearly hear 1000 is pointing p, i.e char*p= p.

Replace p as char *p.

Can you explain pointe def and array def.

Can you combine two statements in pointers.