c ++异常:抛出std :: string

#include <stdexcept>
#include<string>

void foo() {
    std::string error_message = "An error occurred";
    throw error_message;
}

int main() {
    try {
        foo();
    } catch (const std::string& e) {
        std::cerr << "Caught exception: " << e << std::endl;
    }
    return 0;
}

#include <stdexcept>

void foo() {
    throw std::runtime_error("An error occurred");
}

int main() {
    try {
        foo();
    } catch (const std::runtime_error& e) {
        std::cerr << "Caught exception: " << e.what()<< std::endl;
    }
    return 0;
}