Where is 'ios'/'ios_base'?

[Steve Frampton <frampton at interq dot or dot jp>]

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Hello:

I'm using g++ with libstdc++ 2.96-69 (courtesy of Red Hat), and I was just 
wondering if the "ios" header file is missing?

I'm using a stringstream with which I'd like to throw an exception if the 
failbit/badbit is set.  I have:

  #include <iostream>
  #include <sstream>
  using namespace std;

  stringstream ss;
  ss.exceptions(ios_base::badbit | ios_base::failbit);

But on compilation I get:

  demo.cpp:25: `ios_base' undeclared (first use this function)

I have tried including <ios> as was suggested by several people on 
EFNet's #c++ channel, but I get the error, "No such file or directory".  I 
can not find an 'ios' header file.

Also, I'm wondering if I'm doing something wrong with stringstream.  While 
this is probably not the proper place to ask, the following code does 
*not* act as I expect:

  ss << argv[1];    // Move the command line argument into the string stream
  ss >> total;      // And move it's integer equivalent to total!

(total is an int).

I was hoping that the code above would take a numeric command line 
argument and convert it to an integer, storing it in total.  Basically,
the "c++ equivalent" of 'total = atoi(argv[1])'.  I was surprised to find 
the failbit set.  ;-)

Thank you in advance for your assistance.

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Steve Frampton    <frampton@interq.or.jp>     interQ (Japan), Inc.
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