How do I handle signals and exceptions on Linux in C++?

Handling signals and exceptions in C++ on Linux involves using the signal handling library and understanding how to manage exceptions properly. In Linux, signals are software interrupts that can be sent to a process to notify it of various events, while exceptions are used in C++ to handle errors in a more structured way.

Handling Signals in C++

To handle signals, you can use the `signal()` function provided by the C standard library. Here's an example of how to set up a signal handler for `SIGINT`, which is sent when you press Ctrl+C:


    #include 
    #include 
    #include 

    void signalHandler(int signum) {
        std::cout << "Interrupt signal (" << signum << ") received.\n";
        exit(signum);
    }

    int main() {
        signal(SIGINT, signalHandler);
        while (true) {
            std::cout << "Running...\n";
            sleep(1);
        }
        return 0;
    }

Handling Exceptions in C++

In C++, exceptions are handled using the `try`, `catch`, and `throw` keywords. Here's an example demonstrating how to catch an exception:


    #include 
    #include 

    void mayThrow() {
        throw std::runtime_error("Error occurred");
    }

    int main() {
        try {
            mayThrow();
        } catch (const std::runtime_error& e) {
            std::cout << "Caught a runtime_error: " << e.what() << '\n';
        }
        return 0;
    }

C++ Linux signals exceptions signal handling exception handling SIGINT signal handler runtime error

How do I handle signals and exceptions on Linux in C++?

Handling Signals in C++

Handling Exceptions in C++

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How do I handle signals and exceptions on Linux in C++?

Handling Signals in C++

Handling Exceptions in C++

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