What is the difference between exception generation and program termination using std::abort?

Exception generation in C++ is a mechanism for error handling, where an exception object is created and propagated up the call stack until a suitable handler (catch) is found. This allows the program to respond correctly to errors and continue working or terminate properly.

The std::abort() function, on the other hand, immediately terminates the program without error handling or resource cleanup. It causes an abrupt process termination, usually with a memory dump.

Key differences:

• Exceptions allow error handling and possibly recovery.
• std::abort() terminates execution without return or cleanup.

Example:

try {
    throw std::runtime_error("Error");
} catch (const std::exception& e) {
    std::cout << "Caught exception: " << e.what() << std::endl;
}

// vs

std::abort(); // Immediate program termination