Introduction

Decrementing and subtraction are very similar to incrementing and addition. The same rules apply:

Decrementing a pointer: address = address - sizeof(data type)
Subtracting value from a pointer: address = address - value * sizeof(data type)

Example code for decrementing

It’s mostly the same code from the previous lesson. We declare two variables a and b. Then, we start with a pointer to a and decrement it (line 14). By decrementing, the pointer points to variable b.

The code appears to ...

Ask

Introduction

Stack and Local Memory

Passing Arguments to Functions

Pointer Arithmetic Basics

Pointers and Arrays

Pointers and Strings

Pointers and Functions

Write a Shell in C

Complex Pointer Declarations

Assessment 1

Heap and Dynamic Memory

Structures

Practicing Everything with Linked Lists

Assessment 2

Genericity Using Void Pointers

Advanced Memory Manipulation

Project Prep: Binary Search Trees

Efficiently Processing Temperature Samples

Efficient Dictionary

Efficiently Processing Employee Records

Conclusion

Subtraction

Introduction

Example code for decrementing