nothrow

#include <cstdlib>
#include <iostream>

using namespace std;

int main() {
    size_t length = 80000000000L;
    int* p = NULL;

    try {
        cout << "Trying to allocate a big block of memory" << endl;
        p = new int[length];
        // p = new(nothrow) int[length];
        cout << "No exception." << endl;
    } catch (std::bad_alloc& ba) {
        cout << "bad_alloc exception!" << endl;
        cout << ba.what() << endl;
    }

    if (p)
        cout << "Memory successfully allocated." << endl;
    else
        cout << "So bad, null pointer." << endl;

    // for(size_t i = 0; i < length; i++)
    //     p[i] = i;
    // size_t sum;
    // for(size_t i = 0; i < length; i++)
    //     sum += p[i];
    // cout << "Sum = " << sum << endl;
    if (p)
        delete[] p;
    return 0;
}