Must Specify a File System

**Crimxan** · 06-17-2008

Hello, picked up one of the recommened books C++ Without Fear and ran into a problem with one of the exercises.

This is such a basic program I admit to a little embarrassment about asking for your advice as I am sure the solution is simple. None the less I am not finding one... any help is appreicated.

Code:

#include <iostream>
using namespace std;

int main()
{

// Declare floating-pt variables
    double ctemp, ftemp;
    
// Prompt and input value of ctemp (Celsius Temp).

    cout << "Input a Celcius temperature and press ENTER: ";
    cin >> ctemp;

// Calculate ftemp (Fahrenheit Temp) and output value.
    
    ftemp = (ctemp * 1.8) + 32;
    cout << "Fahrenheit temperature is: " << ftemp;

    return 0;
}

So, specifically when I compile (btw using the RHIDE compiler that came with the book) it stops on line (4), which is the "int main()" line, when I attempt to run the program it prints "Must specify file system"

So... I am thinking it is something in the computer settings or something, since the code itself seems correct,(according to the book). mayhaps I overlooked something?

This PC is running XP pro and I am working this through the MS-DOS command prompt window.

again thanks for your time...

**cpjust** · 06-17-2008

There's nothing wrong with the program.
I've never heard of that compiler, so the first thing I'd do is get a decent compiler that people actually use, like Visual Studio on Windows or gcc on Linux.
http://www.microsoft.com/express/

**Crimxan** · 06-17-2008

good advice, thanks.

I thought I was making things easier for myself with sticking to the software provided... wrong! Following your suggestion and used Visual C++ Express, it took me little bit to "get my bearings" in that environment, but finally figured it out well enough to compile and run the program... LO and BEHOLD it worked... well... the heavens didn't open with a chorus of angels but it functioned as designed...LOL.

Thanks again.

One thing I will add if there are other noob like myself, using something like visual studios to write such basic programs may seem a bit daunting, since it is designed for much larger projects and all of the 'abilities' it has.

can anyone suggest a trimmed down c++ compiler that would better for beginners, or should we just "strap in" and dig through the more advanced program editors?

**Salem** · 06-17-2008

It would seem to be more a problem with the setup of the IDE (or DJGPP, which is the compiler which comes with RHIDE as I recall).

Go through the install / setup instructions again to see if there's anything you missed.

As for modern looking compilers, with the small footprint
www.codeblocks.org

It also uses the same compiler as RHIDE (though probably a newer version). Make sure you get the larger of the two packages available the first time, as that includes the compiler and IDE. The smaller one is the IDE only.

**Elysia** · 06-18-2008

Originally Posted by Crimxan

One thing I will add if there are other noob like myself, using something like visual studios to write such basic programs may seem a bit daunting, since it is designed for much larger projects and all of the 'abilities' it has.

There's not much wrong with Visual Studio. It may be for larger projects, but it also works fine with smaller projects.
If I may ask, what exactly was it that you found daunting?

**cyberfish** · 06-18-2008

Another vote for Code::Blocks. Very simple, and gets the job done. (I write Makefiles myself though, so I use it pretty much as a tabbed editor only)

**Elysia** · 06-18-2008

In that case, I'll vote for Visual Studio because it gets the job done.
IDE, compiler and easy-to-use debugger, all in one package.

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