How to declare a pointer variable
-pointer variables are declared using an asterisk( * ) The asterisk is called the indirection operator or the de-referencing operator).
example 1:
int a,b, *ptr;
ptr is a pointer to an integer
example 2:
ptr=&x[0];
*ptr refers to x[0]
explanation: asterisk( * ) is an important symbol for pointer
example 3:
int a, *iPtr;
char s;
double *dPtr;
a [______?______]
iPtr [______?______]
s [______?______]
dPtr[______?________]
Example 4;
explanation:The pointer have a relation between variables and memories