Because you can produce fast and efficient code. Function arguments are passed "by value", and so you can't change the original value of the argument, but if you use pointers, you can.
cursor
6 2 on the coin, 3 on the pointer: 2x3=6
Track pads , Trackballs and Pointer
You use the dot operator when the left side is the name of the object or a reference to an object, and you use the arrow operator when the left side is a pointer to an object. Example: struct foobar x, *p= &x; x.field = p->field; (&x)->field = (*p).field;
A protractor is a device for measuring the angle between two intersecting lines.http://en.wikipedia.org/wiki/ProtractorIt is a half circle and (most) have a pointer in the middle to help you see the angle you are going to use .
because u freakin can
A double pointer has two basic meanings. One is ofa pointer to a pointer, where changing the value ofdouble pointer will result in the original pointer being changed. Another is that of a two-dimentional array, such as a matrix, or a list of char* (e.g. in main when you use argv).
Pointer is a variable that stores the address of another variable. Since pointer is also akind of variable, thus pointer itself will be stored at a different memory location.
*
Generic pointer of type 'void *' is compatible with any (data-)pointer, but you cannot use the following operators on it: + - ++ -- += -= * -> []
A pointer to pointer has many uses, one of the simplest being 2D arrays (matrices). Compacting garbage collectors also often employ pointer pointers.
void pointer
Pointer is a variable that stores address of a variable . A NULL Pointer a pointer that doesn't point to anything, it is a literal zero .Some people ,notably C++ programmers, prefer to use 0 rather than NULL.
It depends on what type of data you wish to manipulate.
A Green Laser Pointer is very simple to use. In order to see the green laser from the pointer, you press the button and point it onto an opaque surface.
insert or delete values both side.so use double pointer
Pointer is a variable that stores the address of another variable . So pointer basically stores the address of another variable and size of pointer can be evaluated by using sizeof operator.