这是如何工作的:
int main()
{
int * ch = NULL;
cout<<"Hello"<<ch<<"World"<<endl;;
cout<<"Hello world1"<<endl;
return 0;`
}
而这失败了:
int main()
{
char * ch = NULL;
cout<<"Hello"<<ch<<"World"<<endl;;
cout<<"Hello world1"<<endl;
return 0;`
}