Exception handling is a critical mechanism in C++ for managing runtime errors gracefully. Here's a concise guide:
Key Concepts
Try/Catch Blocks:
Usetry
to enclose code that might throw an exception. Catch specific exceptions withcatch(...)
.
📌 Example:try { // risky code } catch (const std::exception& e) { std::cerr << "Caught exception: " << e.what() << '\n'; }
Exception Types:
C++ exceptions are typically derived fromstd::exception
. Custom exceptions can be created by inheriting from this class.
⚠️ Avoid throwing raw pointers or non-exception objects.
Best Practices
- Specificity: Catch specific exceptions instead of using
catch(...)
✅catch(std::runtime_error&)
vs ❌catch(...)
- Resource Management:
Use RAII (Resource Acquisition Is Initialization) to ensure resources are released properly. - Don’t Ignore Exceptions: Always handle or rethrow exceptions to prevent undefined behavior.
Further Reading
For a deeper dive into C++ exception handling, check our C++ Exception Handling Guide.
Advanced Tip: noexcept Keyword
Use `noexcept` to specify functions that won’t throw exceptions, enabling optimizations.Always ensure your code includes proper error handling to maintain robustness and reliability. 🛡️