C Tutorial Plus Syntax
Advanced C Arrays
Plus Syntax

Pointer Style and strcpy()
Pointer Type Effects
Arrays and Pointers
Array Names Are Const
Heap Memory
Memory Management
Dynamic Arrays
Advantages of being in the heap
Disadvantages of being in the heap
Dynamic Strings



'+' Syntax


In a closely related piece of syntax, a + between a pointer and an integer does the same offset computation, but leaves the result as a pointer. The square bracket syntax gives the nth element while the + syntax gives a pointer to the nth element.


So the expression (intArray + 3) is a pointer to the integer intArray[3].

(intArray + 3) is of type (int*) while intArray[3] is of type int. The two

expressions only differ by whether the pointer is dereferenced or not. So the expression

(intArray + 3) is exactly equivalent to the expression (&(intArray[3])). In fact those two probably compile to exactly the same code. They both represent a pointer

to the element at index 3.


Any [] expression can be written with the + syntax instead. We just need to add in the pointer dereference. So intArray[3] is exactly equivalent to *(intArray + 3). For most purposes, it's easiest and most readable to use the [] syntax. Every once in a while the + is convenient if you needed a pointer to the element instead of the element itself.

Want To Know more with

Video ???

Contact for more learning: webmaster@freehost7com