Français
11. Exception handling
C++ has an exception handling mechanism. An exception is a sequence break (not a function call!) triggered (or "thrown") by a program using the throw instruction, in which any expression is mentioned. The program then branches to a set of instructions, known as an "exception handler", chosen according to the nature of the expression specified in the throw instruction.
For a portion of the program to intercept an exception, it must appear within a block preceded by the try keyword. The latter must be followed by one or more catch instructions representing the various corresponding handlers, as in this diagram :
try
{ ..... // instructions likely to raise an exception, i.e.
// directly by throw (exp), or via
// functions...
The Ultimate Scientific and Technical Reference
This article is included in
Control and systems engineering
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Exception handling
Standard library
References
The Ultimate Scientific and Technical Reference
