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: All
Jun 12, 2000



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Declarations With Implicit int Aren't Permitted

Does your compiler accept the following declarations?

 volatile x;
 const y  = 0;

In pre-standard C++, the default type in such incomplete declarations was int. Thus, the first declaration would declare x as "volatile int" and y as "const int. " However, according to the C++ standard, declarations with implicit int aren't permitted anymore. Instead, you have to specify the variable's type explicitly:

 volatile int x; // OK
 const int y  = 0; // OK

Many compilers aren't yet compliant in this respect and accept the incomplete declarations given above. You shouldn't count on this because future versions of your compiler will probably flag such declarations as errors.

Danny Kalev
Comment and Contribute






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



Thanks for your registration, follow us on our social networks to keep up-to-date