Always Initialize Pointers

An uninitialized pointer has an indeterminate value. It’s almost impossible to test subsequently whether such a pointer is valid, especially if it is passed as an argument to a function, which in turn, can only verify that it is not NULL:

 void func(char *p );void main(){  char * p; //dangerous; an uninitialized pointer        //_many lines of code; p left uninitialized by mistake  if (p) //erroneously assuming that a non-NULL value indicates a valid address  {    func(p);   // func has no way of knowing whether p has a valid address; undefined behavior expected  }}

Even if your compiler does initialize pointers automatically, your code will be more readable and portable if you use explicit initializations.

Share the Post:
Share on facebook
Share on twitter
Share on linkedin


The Latest

your company's audio

4 Areas of Your Company Where Your Audio Really Matters

Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a

chrome os developer mode

How to Turn on Chrome OS Developer Mode

Google’s Chrome OS is a popular operating system that is widely used on Chromebooks and other devices. While it is designed to be simple and user-friendly, there are times when users may want to access additional features and functionality. One way to do this is by turning on Chrome OS

homes in the real estate industry

Exploring the Latest Tech Trends Impacting the Real Estate Industry

The real estate industry is changing thanks to the newest technological advancements. These new developments — from blockchain and AI to virtual reality and 3D printing — are poised to change how we buy and sell homes. Real estate brokers, buyers, sellers, wholesale real estate professionals, fix and flippers, and beyond may