C++中new的防错处理

#include <iostream>
using namespace std;
int new1(void)
{
	char *test=NULL;
    while(1)
    {
        test = NULL;
        test = new char[1000000];
        if(test == NULL)		//错误的处理方式，因为会抛出异常，而非NULL 
        {
            cout<<"I am wrong\n";
            break;
        }
    }
    cout<<"I am ok!\n";
    return 0;
}

int new2(void)
{
	char *test=NULL;
    while(1)
    {
        try
        {
        	test = new char[1000000];
        }
        //catch(...)
		catch(std::bad_alloc)		//正确的处理方式 
        {
            cout<<"I am wrong!\n";
            break;
        }
    }
    cout<<"I am ok!\n";
}

int main(int argc,char* argv[])
{
    new2();
    cout<<"--------"<<endl;
    new1();
    cout<<"++++++++"<<endl;
    
    return 0;
}