E.what in 'catch' clauses

Dev Articles Community Forums Sponsor:

July 1st, 2009, 11:26 AM

yoni162

Registered User

Join Date: Jun 2009

Posts: 19

Time spent in forums: 5 h 1 m 48 sec
Reputation Power: 0

E.what in 'catch' clauses

I often see in 'catch' clauses phrases that look like this:

Code:

 cerr<<e.what()<<endl;

What does this do? is e the exception object thrown? what does the 'what()' function do? Thanks

July 1st, 2009, 12:25 PM

Icon

Command Line Warrior

Join Date: Sep 2005

Posts: 942

Time spent in forums: 1 Week 6 Days 9 h 26 m
Reputation Power: 5

Yes it is usually the exception object being thrown. It probably inherits from std::exception which has the what() member function. This function returns a const char* with the description of the exception.

__________________
There is no such thing as C/C++, you either program C or C++

Viewing: Dev Articles Community Forums > Programming > C/C++ Help > E.what in 'catch' clauses

« Previous Thread | Next Thread »

Thread Tools	Search this Thread
Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread:

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts vB code is On Smilies are On [IMG] code is On HTML code is Off

View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox

Forum Jump

Free IT White Papers!

How to Present Effectively Online
This white paper offers practical and actionable advice on the key steps that any presenter should consider as they plan and execute a Webinar or online meeting.
Request Your Free Technology Downloads!

Open Source Security Myths
Open Source Software (OSS) is computer software whose source code is available to the general public with relaxed or non-existent intellectual property restrictions (or arrangement such as the public domain), and is usually developed with the input of many contributors.
Request Your Free Technology Downloads!

Power and Cooling Capacity Management for Data Centers
This paper describes the principles for achieving power and cooling capacity management.
Request Your Free Technology Downloads!

Scalable, Fault-Tolerant NAS for Oracle - The Next Generation
For several years NAS has been evolving as a storage alternative for Oracle databases, and for good reason: NAS is quite often the simplest, most cost-effective storage approach for Oracle. Learn about the benefits that HP's approach to scalable NAS brings to Oracle environments in this comprehensive white paper.
Request Your Free Technology Downloads!

Understanding Web Application Security Challenges
This white paper discusses many common threats and preventive measures for Web application security, and explains what you can do to help protect your organization.
Request Your Free Technology Downloads!

More Free IT White Papers!