mikroC
mikroC - C Compiler for Microchip PIC microcontrollers
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Pointer arithmetic in C is limited to:
-assigning one pointer to another,
-comparing two pointers,
-comparing pointer to zero (NULL),
-adding/subtracting pointer and an integer value,
-subtracting two pointers.
The internal arithmetic performed on pointers depends on the memory model in force and the presence of any overriding pointer modifiers. When performing arithmetic with pointers, it is assumed that the pointer points to an array of objects.
Arrays and Pointers
Arrays and pointers are not completely independent types in C. When name of the array comes up in expression evaluation (except with operators & and sizeof ), it is implicitly converted to the pointer pointing to array’s first element. Due to this fact, arrays are not modifiable lvalues.
Brackets [ ] indicate array subscripts. The expression
id[exp]
is defined as
*((id) + (exp))
where either:
id is a pointer and exp is an integer, or id is an integer and exp is a pointer.
The following is true:
&a[i] = a + i a[i] = *(a + i)
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