C++ throw的实验 & 异常类继承关系

如果定义了 throw() 表示函数不抛出异常，这时候如果还是抛出，会导致运行时错误。

#include <iostream>
#include <exception>
#include <stack>

using namespace std;

void func() throw() {
    int x = 5;
    throw x;
}

int main() {
    std::cout << "Hello, World!" << std::endl;

    try {
        func();
    }
    catch(int &x) {
        std::cout << x << endl;
    }
    catch (...) {
        cout << "here catch" << endl;
    }

    return 0;
}

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