Compiling a program

Applications Programming
1

Hello. I am trying to run a c program on a unix shell (ssh). I have searched this forum but have not come accross the soultion to my problem, so I am posting my question here :cool:

I wrote the following simple code:

#include <iostream.h>

using namespace std;

int main()
{
cout << "\nThis is our first C++ prgram.";
cout << "\nIt works!!!";

    return 0;

}

I saved this in a file called first.c
I entered command gcc first.c
I get error "first.c:1: iostream.h: No such file or directory"
I dont understand, does the gcc compiler not come with standard headers such as iostream and iomanip?

2

Minnesota Red,

I'm not sure if this would solve your problem, but check your LD_LIBRARY_PATH. This would be different depending on your OS. It seem to me that your "env" variable may not include the system standard library path. Try > env|grep LIBRARY, then chek each directory to see if the library is there. You may just be missing the library in general. If on a linux platform try >locate ipstream.h. If you get a result then that mean you have some other problem.

Larry

3

OS is winxp, but I am using ssh to compile. I dont know if that makes much difference. I am a newbie, so I did not follow what you were saying.

BTW, Mod can U move this to correct forum. I just realized I posted this in wrong area by accident.

4

(Moved)

Your shell has variables set (seen with the env command). One of them is the LD_LIBRARY_PATH. You need to find where the file iostream.h is located and add that directory path to your LD_LIBRARY_PATH.

# echo $LD_LIBRARY_PATH
/usr/lib:/usr/local/lib:/usr/openwin/lib

(Ours is set up in a second profile)
# . /u/etc/profile
Profile Rev: v1.2.0.4 Platform: SunOS Architecture: sun4u
Initializing: ................ Done.
#
# echo $LD_LIBRARY_PATH
LD_LIBRARY_PATH=/usr/local/lib:/usr/lib:/lib:/u/lib:/usr/ccs/lib:/usr/5bin/lib:/usr/ucblib:/usr/xpg4/lib:/u/lib:/usr/openwin/server/lib:/usr/openwin/lib:/usr/opt/SUNWmd/lib

So the OS is Debian Linux, not WinXP - the Linux system is where you are compiling, correct?

To find the file, you can ask the Sys Admin, or try using the find command (man find) - it may be in /usr or /u (it matters how the system is set up).

And honest too.

5

You have written a c++ program, not a c program.

Try this command

g++ first.c -o first

to compile it. You have a bug, but I'll let you find it.

6

u sure? this is str8 out the text book

btw, the g++ worked. THANX!

how do I go about executing the a.out that I now have?

7

Your output file is called first. You can run it with "./first".

Use your own good judgement as you view the results.

8

Yah I just found that browsing another site. THANX A LOT FOR HELP. I am finally seeing how c++, with unix, with a database tie in... its all coming together.

So my college degree wasnt a total waste, was it :smiley: ?