C - Pointer Notation and Array Notation

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Introduction

Pointer Notation
 Array Notation
 Description
**ptr
 *array[]
 Declares an array of pointers.
*ptr

 array[0]

 The address of the first pointer in the
array; for a string array, the first string.
*(ptr+0)
 array[0]
 The same as the preceding entry.
**ptr


 array[0][0]


 The first element of the first pointer in
the array; the first character of the first
string in the array.
**(ptr+1)


 array[1][0]


 The first element of the second pointer
in the array; the first character of the
second string.
*(*(ptr+1))


 array[1][0]


 The first element of the second pointer
in the array; the first character of the
second string.
*(*(ptr+a)+b)
 array[a][b]
 Element b of pointer a.
**(ptr+a)+b


 array[a][0]+b


 What this item represents is the value of
element 0 at pointer a plus the value of
variable b. Use the *(*(ptr+a)+b) notation instead.

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