g++ compiler

g++ compiler

[hossein shoghian]

hi
please help me
how to compiling this main with GCC, the GNU Compiler
i use g++ -pthread  -Wall main.cpp
but don't pass argument


main.cpp
int main(int argc, char *argv[]) {



   /* Verify the correct number of arguments were passed in */

   if(argc != 4) {

      fprintf(stderr, "USAGE:./main.out <INT> <INT> <INT>\n");

   }



   int mainSleepTime = atoi(argv[1]);
   int numProd = atoi(argv[2]);
   int numCons = atoi(argv[3]);


   exit(0);

}

Re: g++ compiler

[Axel Freyn]

Hi,
> please help me
> how to compiling this main with GCC, the GNU Compiler
> i use g++ -pthread  -Wall main.cpp
> but don't pass argument

The compiler is right - your file is wrong;-)
> 
> main.cpp
> int main(int argc, char *argv[]) {
>    /* Verify the correct number of arguments were passed in */
>    if(argc != 4) {
>       fprintf(stderr, "USAGE:./main.out <INT> <INT> <INT>\n");
>    }
>    int mainSleepTime = atoi(argv[1]);
>    int numProd = atoi(argv[2]);
>    int numCons = atoi(argv[3]);
>    exit(0);
> }
If you save the file with extension "cpp", GCC will treat it as a C++
code. However, in C++ you have to declare all functions before you use
them (e.g. atoi, exit, fprintf) and also all constants or variables
(like "stderr").
These are declared in header-files from the standard library - which you
have to include: So at the beginning of your file, you need

#include <cstdio>
#include <cstdlib>

with these two lines, the code should compile fine

HTH,

Axel

g++ compiler

[Rene-Clement Toussaint]

Dear GNU project:

I was trying to download the binary for Ubuntu Linux for G++ compiler via the OpenPKG link but the server could not connect to the ftp site.  Is there an alternate location for me to download the g++ compiler for Ubuntu?  I am running Ubuntu on my MacBook Pro via VMWare Fusion and would like to try to build the Google Gadgets.  I started building them but I ran into an error saying that I was missing a component which I could get once I compiled the source code for Google Gadgets.

Sincerely,
Rene

Re: g++ compiler

[Axel Freyn]

Hello Rene,

> I was trying to download the binary for Ubuntu Linux for G++ compiler
> via the OpenPKG link but the server could not connect to the ftp site.
> Is there an alternate location for me to download the g++ compiler for
> Ubuntu? 
I think, the easiest solution in order to get binary releases will be to
use the package manager of your distribution, e.g. on Ubuntu

sudo aptitude install g++

should be sufficient, if aptitude is correctly configured (= has access
to an Ubuntu mirror or a DVD).

HTH,

Axel