Prerequisite : Exceptions in C++
Standard C++ contains several built-in exception classes. The most commonly used is bad_alloc, which is thrown if an error occurs when attempting to allocate memory with new.
This class is derived from exception.
To make use of bad_alloc, one should set up the appropriate try and catch blocks. Here’s a short example, that shows how it’s used :
RunTime error :
bad_alloc caught: std::bad_alloc
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