What is the purpose of using multiple catch blocks?

The purpose of using multiple catch blocks is to handle different types of exceptions separately. This allows for more granular error management by providing specific error handling for each exception type. Here are the key points:

1. Specificity: Each catch block can handle a specific exception type, allowing for tailored responses to different error conditions.
2. Order of Execution: Catch blocks are executed in order from the most specific to the most general, ensuring that the most relevant handler is invoked first.
3. Granular Error Management: By having multiple catch blocks, you can provide specific error messages and recovery strategies for different scenarios, improving the robustness of your code.

For example:

try {
    // Code that may throw exceptions
} catch (const std::length_error& e) {
    // Handle length error
} catch (const InvalidAgeException& e) {
    // Handle invalid age error
}

This structure allows for clear and effective exception handling in your programs.