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// 10-throw2.cpp : throw and catch exceptions from within and outside std::exception hierarchy

import std;

using namespace std;

int throwing() {

cout << 1+R"(

Please choose:

1) throw std::runtime_error

2) throw std::exception

3) throw int

4) quit

Enter 1-4: )";

int option;

cin >> option;

switch(option) {

case 1:

throw runtime_error{"std::runtime_error thrown"};

case 2:

throw exception{};

case 3:

throw 99;

case 4:

return 1;

default:

cout << "Error: unrecognized option\n";

}

return 0;

}

int main() {

for (;;) {

int action{};

try {

action = throwing();

}

catch (runtime_error& e) {

cerr << "Caught std::runtime_error! (" << e.what() << ")\n";

}

catch (exception& e) {

cerr << "Caught std::exception!\n";

}

catch (...) {

cerr << "Caught something other than std::exception! Quitting.\n";

return 1;

}

if (action) {

break;

}

}

}