C++ Programming and Technical

What is a Wrapper class?

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C++ Other Question

What is Stack? Explain its uses. What will be the O/P?

main()
{
struct xyz {
int i;
};
struct xyz *p;
struct xyz a;
p=&a;
p->i=10;
printf("%d",(*p).i);
}

Options
1) 0
2) 10
3) Garbage Value
4) Compile Time Error