C / C++ / MFC

Eranga Thennakoon wrote:

Then later I want to get that string from a buffer. So I do the following.

CPallini wrote:

what does exactly mean later on (is there a chance that buff var was overwritten in the meantime?)?

I appreciate your help all the time...
Eranga

public:	
	char* buff;

I appreciate your help all the time...
Eranga

Eranga Thennakoon wrote:

Ok, thanks a lot pal. Now I got the point. At the same time. One of friend says that, as a good practice in programming, as much as possible it is better to avoid global variables and used member variables. Is that true?

Eranga Thennakoon wrote:

Why I'm asking is, one is that I'm really new for C++, two is I most familiar with Java and there is no such a way, so that those tips can be really helpful to me

CPallini wrote:

Well if you're familiar with Java then you should be familiar with OOP principles too, such encapsulation and information hiding that both go against global variables usage.

I appreciate your help all the time...
Eranga

class A
{
public:
  A() {
    cout << "A(), and going to throw! \n";
    throw 3;
  }
};

A obj; // Global. Will throw when initialization!
void main()
try {
}
catch(...) { // catch all, but it just can not catch what being thrown in A::A()
}

using namespace std;

class Foo{

public:

	Foo ();
};

Foo::Foo()
try{
	cout << "constructing" << endl;

	throw(0);

} catch (...)
{
	cout << "catch exception in constructor" << endl;
}


Foo foo;

int main()
{
	int i = 0;

	cout << i;

	return 0;
}

try { // <---  Compile-error at this line.
  A obj; // To throw something.
}
catch(...) {
}
void main()
{
}

George_George wrote:

No words like local or global catch.