Exception handling is a critical mechanism in C++ for managing runtime errors gracefully. Here's a concise guide:

Key Concepts

  • Try/Catch Blocks:
    Use try to enclose code that might throw an exception. Catch specific exceptions with catch(...).
    📌 Example:

    try {
        // risky code
    } catch (const std::exception& e) {
        std::cerr << "Caught exception: " << e.what() << '\n';
    }
    
  • Exception Types:
    C++ exceptions are typically derived from std::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.
    cpp_exception_handling
  • 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.
exception_flow

Always ensure your code includes proper error handling to maintain robustness and reliability. 🛡️