Question

How to catch all unhandled exceptions in C++

Answer 1

#include <iostream>
#include <exception>
#include <stdexcept>
 
using std::cout;
using std::endl;
 
void function(int n) {
    try {
        if (n == 0)  
            throw n;
        if (n == 1) 
            throw std::overflow_error("Divide by zero exception");
        if (n == 2)  
            throw 3.14;
        if (n == 4) 
            throw 'z';
    }
    catch (int __n) { 
        cout << "catch n = " << __n << endl;
    }
    catch (double d) {
        cout << "catch d = " << d << endl;
    }
    catch (...) {
        cout << "catch (...) : ";
        std::exception_ptr ep = std::current_exception();
        cout << (ep ? ep.__cxa_exception_type()->name() : "null") << endl;
    }
}
 
int main()
{
    function(0);
    function(1);
    function(2);
    function(4);
}
 
 
 
/*
run:
 
catch n = 0
catch (...) : St14overflow_error
catch d = 3.14
catch (...) : c
 
*/

 

70+ SQL courses for beginners and professionals