ya, this is the above syntax for malloc function........

ya i will clearly explain ,

let us take a small block of coding , here my aim is to get 'n' numbers and print the 'n' numbers ......

#include<alloc.h>
void main()
{
int n ,*pointer;
clrscr();
printf("enter the number of elements u r going to enter :");
scanf("%d",&n);
pointer=(int *)malloc(n*sizeof(int));


   the above statement states  that : , this function is requesting the OPERATING SYSTEM  to allocate 'n' amount of  memory of a data type integer. and  since the return format of the malloc function is an address , so we are type casting as (int*)before malloc , and the returned starting address  will be stored in the pointer variable (pointer) ..
   this 'pointer'  will have the starting address of the allocated memory dynamically...
that's all..

for(int i=0;i<n;i++)
{
scanf("%d",(pointer+i));
}
for(i=0;i<n;i++)
printf("%d\n",*(pointer+i));
getch();
}


thank u

I'll add few more lines to answer above just to make it a
bit more understandable.


Malloc allocates consequetive blocks of memory of requested
size.Then it returns the starting address of this block ,
the address returned is of type void , since it is a void
pointer so we need to typecast it to one that we requested
so typecasting is done( This headache has been removed in
C++ by using new as new automatically does this typecasting)