Doubts related to C/C++

[sathishc58]

Hi All,

Could anybody answer for the following queries?

1) How addition/subtraction of two different objects is possible in C without operator overloading? Here "int" and "float" could be taken as two different objects. (Not sure whether my understanding is correct)

2) I have given a simple structure which is used to construct a linked list.
struct a
{
char b[4];
struct a *next;
};
My question is why "*next" should be of the same type ie "struct a". Cannot we use "INT *NEXT" as a->next is just a address?

3) class sample
{
public:
int a, b;
sample()
{
a = 5;
b = 10;
}
}

main()
{
sample s, s1;
s1 = s;
}
When I say "s1 = s" only "variable a" should get copied to object "s1". How can I achieve this?

Thanks & Regards
Sathish Kumar

[weaknessforcats]

You have to write a function in C to copy one object to another.

void Copy(struct Data* left, struct Data* right)
{
    /*copy right object to left object here. */
}

Actually, you have to do the same thing in C++ but there is syntax that let's you make the call this way:

objA = objB;

rather than:

Copy(&objA, &objB);