Programming Forums - Huge C++ Programs For Hellowprld!!

Programming Forums (http://www.programmingforums.org/forumindex.php)

- C++ (http://www.programmingforums.org/forum15.html)

- - Huge C++ Programs For Hellowprld!! (http://www.programmingforums.org/showthread.php?t=1117)

HELP!!!!!!!!

i'm using DEV_CPP and i am getting 100KB+ programs for a simple code that prints "hello world" to the screen !!!!

how can i reduce the size of my programs ??

Thats crazy.....Because I made a simple text file encryption program and it was only 5KB

You must be doing somthing wrong dude. Can you post exactly what code you are using?

no i did'nt do anything wrong !!

this is the source code of the program :

#include <iostream.h>

int main()
{

cout << "hello world\n";
return 0;
}

hmmm, i have no idea what's going on then. Probally somthing to do with your compiller.

It's most probably the compiler - I'm afraid the only thing you can do is deal with it.

With this code using win98:

#include <iostream>

using namespace std;



int main()

{

  cout << "hello world\n";

  return 0;

}

Compiled with MingW using

g++ -o big big.cpp

gave me an executable of 438kb
Using different switches to first convert to asm then compile

g++ -s big.cpp -o big2

gave me 206kb
I'm not sure if this can be reduced further other than switching to C.

Try giving it the switch -Os, that will likely help it a lot. I do not think that one header is causing that much bloat... it is also possible that you are generating debug information and having that inserted in there?

On win98 with mingw gcc version 3.2 the -Os switch still gave me 438kb.
Using this code and saving as a C file.

#include <stdio.h>



int main()

{

  printf("hello world\n");

  return 0;

}

Compiled with:

gcc -o bigc bigc.c

gives 22kb

Compiled with:

gcc -s bigc.c -o bigc2

nets 11kb.

FWIW VC++6 gave me an executable of 221kb for the cpp code.

As an interesting note I decided to compile the exact same program and these are my results:

gcc -Os hello.c; ls -las a.out;

8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:13 a.out

Only 6.8k in size... strange difference there...

gcc hello.c; ls -las a.out;

8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:15 a.out

No change in results here....

bash-2.05b$ gcc -s hello.c

bash-2.05b$ ls -las a.out

4 -rwxr-xr-x 1 kurifu users 3180 Nov 13 00:16 a.out

Half the space saved here... but that is because the "-s" option strips uneeded and debugging information from the executable... I got the same results when I ran this:

bash-2.05b$ gcc -Os hello.c

bash-2.05b$ ls -las a.out

8 -rwxr-xr-x 1 kurifu users 6828 Nov 13 00:20 a.out

bash-2.05b$ strip a.out

bash-2.05b$ ls -las a.out

4 -rwxr-xr-x 1 kurifu users 3160 Nov 13 00:20 a.out

Now one thing we need to bear in mind is that I compiled this code to run on linux, which means that if you are using windows than we will have different executable formats, ELF in nature is smaller than windows' PE32 format.

Unstripped code will always vary in size depending on the amount of debugging information your compiler puts in there by default, and the format that it uses to record this information.. that may not be unusual sizes at all for what you are attempting to accomplish. Actually they seem very reasonable in my opinion.

Here is more information about my OS and compiler:

bash-2.05b$ uname -a; uptime; gcc -v;

Linux tsukasa 2.6.9-gentoo-r1 #1 Fri Nov 5 21:16:53 AST 2004 i686 Mobile Intel(R) Pentium(R) 4 - M CPU 2.40GHz GenuineIntel GNU/Linux

 00:23:42 up 1 day, 10:49, 3 users, load average: 0.06, 0.27, 0.25

Reading specs from /usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/specs

Configured with: /var/tmp/portage/gcc-3.3.4-r1/work/gcc-3.3.4/configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/3.3 --includedir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/3.3/info --enable-shared --host=i686-pc-linux-gnu --target=i686-pc-linux-gnu --with-system-zlib --enable-languages=c,c++,f77,objc --enable-threads=posix --enable-long-long --disable-checking --disable-libunwind-exceptions --enable-cstdio=stdio --enable-version-specific-runtime-libs --with-gxx-include-dir=/usr/lib/gcc-lib/i686-pc-linux-gnu/3.3.4/include/g++-v3 --with-local-prefix=/usr/local --enable-shared --enable-nls --without-included-gettext --disable-multilib --enable-__cxa_atexit --enable-clocale=generic

Thread model: posix

gcc version 3.3.4 20040623 (Gentoo Linux 3.3.4-r1, ssp-3.3.2-2, pie-8.7.6)