用try_catch防止内存申请失败

#include <iostream>
#include <exception>
using namespace std;

int main () throw ( exception )
{
    const unsigned long SIZE = 500000000;
    char *ptr[10];

    try
    {
        for ( int counter = 0; counter < 10; counter++ )
        {
            ptr[counter] = new char[SIZE];
            cout << "Memory for ptr[" << counter
                 << "] is allocated" << endl;
        }
    }
    catch (exception &e)
    // catch ( ... )

    {
        cout << "Exception: ";
        cout << e.what() << endl;
        return 1;
    }
    
    for ( int i = 0; i < 10; i++ )
        delete [] ptr[i];

    cout << "End" << endl;
    return 0;
}
OUTPUT:
// Memory for ptr[0] is allocated

// Memory for ptr[1] is allocated

// Memory for ptr[2] is allocated

// Memory for ptr[3] is allocated

// Memory for ptr[4] is allocated

// Exception: bad_alloc