Exceptions

#include <iostream>
#include <algorithm>
#include <fstream>
#include <math.h>
#include <vector>
#include <string>
#include <sstream>
#include <map>
#include <set>

using namespace std;

class MyExc {
private:
    string _msg;
public:
    MyExc(const string& msg) : _msg(msg) {};

    const string& getMsg() const {
        return _msg;
    }
};

void run() {
    int a[100];
    int init_sz = 10;

    for (int i = 0; i < init_sz; ++i) {
        a[i] = i * 29;
    }

    int n;
    cin >> n;

    throw MyExc("Ecx in run");

    try {
        if (n < 0) {
            string s = "Error: n < 0\n";
            throw s;
        }

        if (n >= init_sz) {
            throw "Error: n >= init_sz\n";
        }
        throw 1;

        cout << a[n] << endl;
    }
    catch (const char* e) {
        cerr << "Char* error: " << e << endl;
    }
    catch (const string& e) {
        cout << "String error: " << e << endl;
    }

    cout << "End of run" << endl;
}

int main() {
    try {
        run();
        cout << "after run\n";
    }
    catch (const MyExc& a) {
        cerr << "Exc in main " << a.getMsg() << "\n";
    }
    cout << "End\n";
    return 0;
}