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Bug 77483 - Cannot compile Hello app with c++ using cout
Summary: Cannot compile Hello app with c++ using cout
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: gcc
Version: 8.0
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Jakub Jelinek
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2002-11-07 20:21 UTC by Need Real Name
Modified: 2007-04-18 16:48 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2002-11-07 20:21:56 UTC

Attachments (Terms of Use)

Description Need Real Name 2002-11-07 20:21:49 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 

Description of problem:
cannot compile simple hello world app in c++ using gcc and the 3.2 iostream 

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
2.#include <iostream>
int main()
cout <<"hello world");
return 0;
3. Save as test.c
4. gcc test.c

Actual Results:  Return=  test.c:1:21:  iostream No such file or directory
test.c: In function 'main':
test.c:4: 'cout' undeclared (first us in this function)

Expected Results:  My thought is that the code should compile and that 
somewhere the headers are confused.

Additional info:

I have explored with gcc -B   and cpp -I   etc.  to try and get the headers to 
respond correctly we can get the app to compile using C++ and mapping to the 
backwards directory and using <iostream.h> but that is not the desired method 
and comes with an error etc.

Comment 1 Jakub Jelinek 2002-11-07 20:25:38 UTC
This is a C++ program, right? So it should use .C/.cxx/.cpp/.c++ extension, not .c.
Also, if you are using STL in it, you should use g++ compiler driver, not gcc,
so that libstdc++ gets linked in.
And last, cout is in std namespace, so you need to write std::cout
or add using namespace std; or using std::cout; above main.

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