a namespace/header file question?

[graciano]

Hi
I have:
Version 1

#include <iostream>
using namespace std;
int main(){
	cout << "Hello World!" << endl;
}

Version 2

#include <iostream>
int main(){
	std::cout << "Hello World!" << std::endl;
}

Naturally the two executables have the same size (7.7KB).

Is there a way to reduce the executable size assuming that i'm only using cout and endl?!
Thanks

[helios]

Huh? No. 7K is about as small as you will get if you want to do input/output.
What do you need something that small for, anyway?

[graciano]

Just curious :)

[jsmith]

strip -s -x the executable reduced the size from 6778 bytes to 4256 on my pc.

[seymore15074]

You could also check your compiler's available options for size optimization. I'm not so sure it's going to make much difference with something this small, though.

[graciano]

You were right about the strip ...

$ g++ -Wall v2.cpp -o final
$ ls -l
total 12
-rwxr-xr-x 1 torrao torrao 7930 Dez  9 22:01 final
-rw-r--r-- 1 torrao torrao   88 Dez  9 21:58 v2.cpp
$ strip final
$ ls -l
total 8
-rwxr-xr-x 1 torrao torrao 4048 Dez  9 22:02 final
-rw-r--r-- 1 torrao torrao   88 Dez  9 21:58 v2.cpp
$ strip -R.comment final 
$ ls -l
total 8
-rwxr-xr-x 1 torrao torrao 3796 Dez  9 22:02 final
-rw-r--r-- 1 torrao torrao   88 Dez  9 21:58 v2.cpp 

I went from 7930 to 3796, wish represents about 48% of the initial size.
And looks like there is more in this post: http://utilitybase.com/article/show/2007/04/09/225/Size+does+matter:+Optimizing+with+size+in+mind+with+GCC

Still get the "Hello World!" :)