c++ code works in gcc2.9 not in gcc3.2.2

[Philip Goisman]

Hi,

Hope someone can help. I have the following c++ program which compiles
fine in gcc2.96, but won't compile in gcc3.2.2:

//FMain.cpp

#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>

int main()
{
int RunCurr = 66;
char* before = { "data/geom." };
char* after = { ".xml" };

std::ostringstream GeomFileName;

GeomFileName << before << setw(6)
<< setfill (48) << dec << RunCurr << after << ends ;

cout << GeomFileName.str() << endl;

return 0;
}

Any help is appreciated.

Regards,

Philip

[Kevin Goodsell]

Philip Goisman wrote:

Hi,

Hope someone can help. I have the following c++ program which compiles
fine in gcc2.96, but won't compile in gcc3.2.2:
What errors did it give?

//FMain.cpp

#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>

int main()
{
int RunCurr = 66;
char* before = { "data/geom." };
char* after = { ".xml" };

std::ostringstream GeomFileName;

GeomFileName << before << setw(6)
<< setfill (48) << dec << RunCurr << after << ends ;
It's called std::ends, and you shouldn't be using it.

cout << GeomFileName.str() << endl;
std::cout and std::endl.

return 0;
}

Any help is appreciated.

Regards,

Philip

-Kevin
--
My email address is valid, but changes periodically.
To contact me please use the address from a recent posting.

[Jonathan Turkanis]

"Philip Goisman" <go*****@physics.arizona.edu> wrote in message
news:66**************************@posting.google.c om...

Hi,

Hope someone can help. I have the following c++ program which compiles fine in gcc2.96, but won't compile in gcc3.2.2:

//FMain.cpp

#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>

int main()
{
int RunCurr = 66;
char* before = { "data/geom." };
char* after = { ".xml" };

std::ostringstream GeomFileName;

GeomFileName << before << setw(6)
<< setfill (48) << dec << RunCurr << after << ends ;
cout << GeomFileName.str() << endl;

return 0;
}

There are two problems:

1. The i/o manipulators are in namespace std.
2. GCC 3.2 is finding setfill(48) ambiguous. I tried your code on
several modern compilers, and only como 4.3.3 failed to complain of
this ambiguity. Off the top of my head, I'm not sure whose right.

Anyway, the following compiles on GCC 3.2:

int main()
{
int RunCurr = 66;
char* before = { "data/geom." };
char* after = { ".xml" };

std::ostringstream GeomFileName;

GeomFileName << before << std::setw(6)
<< std::setfill((char) 48)
<< std::dec << RunCurr << after << std::ends ;

std::cout << GeomFileName.str() << std::endl;

return 0;
}

You could also use something like this, which is easier to read.

const char zero = 48;
GeomFileName << before << std::setw(6)
<< std::setfill(zero)
<< std::dec << RunCurr << after << std::ends ;

HTH

Jonathan

[Jonathan Turkanis]

"Jonathan Turkanis" <te******@kangaroologic.com> wrote in message
news:bu************@ID-216073.news.uni-berlin.de...

There are two problems:

1. The i/o manipulators are in namespace std.
Also 'cout' is in std.
this ambiguity. Off the top of my head, I'm not sure whose right.

I'm also not sure who's right. :-)

Jonathan

[red floyd]

Jonathan Turkanis wrote:

"Philip Goisman" <go*****@physics.arizona.edu> wrote in message
news:66**************************@posting.google.c om...

Hi,

Hope someone can help. I have the following c++ program which

compiles

fine in gcc2.96, but won't compile in gcc3.2.2:

//FMain.cpp

#include <stdlib.h>
#include <stdio.h>
#include <iostream>
#include <iomanip>
#include <string>
#include <sstream>

int main()
{
int RunCurr = 66;
char* before = { "data/geom." };
char* after = { ".xml" };

std::ostringstream GeomFileName;

GeomFileName << before << setw(6)
<< setfill (48) << dec << RunCurr << after << ends

;

cout << GeomFileName.str() << endl;

return 0;
}

There are two problems:

1. The i/o manipulators are in namespace std.
2. GCC 3.2 is finding setfill(48) ambiguous. I tried your code on
several modern compilers, and only como 4.3.3 failed to complain of
this ambiguity. Off the top of my head, I'm not sure whose right.

Anyway, the following compiles on GCC 3.2:

int main()
{
int RunCurr = 66;
char* before = { "data/geom." };
char* after = { ".xml" };

std::ostringstream GeomFileName;

GeomFileName << before << std::setw(6)
<< std::setfill((char) 48)
<< std::dec << RunCurr << after << std::ends ;

std::cout << GeomFileName.str() << std::endl;

return 0;
}

You could also use something like this, which is easier to read.

const char zero = 48;
GeomFileName << before << std::setw(6)
<< std::setfill(zero)
<< std::dec << RunCurr << after << std::ends ;

even better would be:

GeomFileName << before << std::setw(6)
<< std::setfill('0')
<< std::dec << RunCurr << after << std::ends;

That way you don't have the implicit reliance on ASCII encoding of
character values.

[Jonathan Turkanis]

"red floyd" <no*****@here.dude> wrote in message
news:iX*****************@newssvr29.news.prodigy.co m...

Jonathan Turkanis wrote:

"Philip Goisman" <go*****@physics.arizona.edu> wrote in message
You could also use something like this, which is easier to read.

const char zero = 48;
GeomFileName << before << std::setw(6)
<< std::setfill(zero)
<< std::dec << RunCurr << after << std::ends ; even better would be:

GeomFileName << before << std::setw(6)
<< std::setfill('0')
<< std::dec << RunCurr << after <<

std::ends;
That way you don't have the implicit reliance on ASCII encoding of
character values.

Certainly, if that's what the OP wants. He went to the trouble of
specifying 48, though, so I'm assuming he had some good reason.

Jonathan