Pointer arithmetic trickiness

Remember that pointer arithmetic changes the value of the pointer with respect to the size of the base type so that every time you add 1 to a pointer, you are actually increasing its size by the actual size of the underlying type. For instance,
int y;
int *x = &y;
cout<<<" is not "<<<" minus one";
The only time when adding one to a pointer is guaranteed to produce the exact next byte is when you perform pointer arithmetic on chars. This can be useful if you have a block of memory and want to treat it as a block of bytes. To access a particular byte, just cast the memory to a char before performing any pointer arithmetic.
Author : Vishesh