[SOLVED] Compiling c++ program

[Despot Despondency]

Hi, I just started learning c++ and I'm trying to compile the following program



#include <iostream>

int main()
{
std::cout << "Hello, world!" << std::endl;
return 0;
}


Now when I try



gcc -o helloWorld helloWorld.c


I get the following error



helloWorld.c:1:20: error: iostream: No such file or directory
helloWorld.c: In function ‘main’:
helloWorld.c:5: error: expected expression before ‘:’ token


I have gcc and build-essential already installed and I've tried using <iostream.h> instead of <iostream>, but to no avail. Any help would be appreciated.

[rbprogrammer]

Your code, you need to do one of two things. Make the header file:

#include <iostream.h>
or include the standard namespace globally, ie:

#include <iostream>
using namespace std;

[cmay]

use
g++ -o hello ./hello.cppnot
gcc -o hello ./hello.cppgcc is the gcc compiler.

[rbprogrammer]

use
g++ -o hello ./hello.cppnot
gcc -o hello ./hello.cppgcc is the gcc compiler.

Hahaha, yup that would solve the problem too. Good eye, cmay

[stevescripts]

use g++ to compile c++ source files - check this link:
http://www.network-theory.co.uk/docs/gccintro/gccintro_54.html

Hope this helps a bit.

Steve
(who appears to be too slow this pm)

[rbprogrammer]

Also, not that this would matter too much on how things will work, but your file seems to have a C file extension (.c), rather than the C++ extension (.cpp). But again, that would not affect your error message, but it is good practice to keep good file extensions, especially if you have a project that combines both C and C++ together.

[stevescripts]

Took me a couple of minutes to remember - but an alternative is to include the stdc++
lib on the command line as an option:



steveo@delldesktop:~$ gcc hw.cpp -o hello -lstdc++
steveo@delldesktop:~$ ./hello
Hello, world!



(BTW, If I recall correctly, the use of iostream.h is deprecated -
I do very little compiled language programming anymore)
Steve

[Despot Despondency]

Hi, thanks everyone. I didn't realize that c++ programs had to be compiled with the g++ command and not gcc. Cheers again.