Login | Register   
RSS Feed
Download our iPhone app
Browse DevX
Sign up for e-mail newsletters from DevX

By submitting your information, you agree that devx.com may send you DevX offers via email, phone and text message, as well as email offers about other products and services that DevX believes may be of interest to you. DevX will process your information in accordance with the Quinstreet Privacy Policy.

Tip of the Day
Home » Tip Bank » C++
Language: C++
Expertise: Intermediate
Jul 2, 2001



Application Security Testing: An Integral Part of DevOps

The ## Concatenation Operator

The preprocessor ## operator concatenates macro arguments. For example:
#define paste(x,y) x ## y

The paste() macro takes two arguments and concatenates them into one. The whitespaces surrounding the ## operator as well as the ## symbol are removed in the concatenation process. In the following example, the paste() function-like macro concatenates the literal 1000 and the affix L thereby creating the constant 1000L.
#define paste(x,y) x ## y #define LONG_MAX paste(1000,L) // LONG_MAX equals 1000L
Danny Kalev
Comment and Contribute






(Maximum characters: 1200). You have 1200 characters left.



We have made updates to our Privacy Policy to reflect the implementation of the General Data Protection Regulation.
Thanks for your registration, follow us on our social networks to keep up-to-date