file copying in c++

[vasanth kumar]

Hi,

I have a file 31oct2003.xls. I want to make a copy of this file with a new name, say:2nov2003.xl s. But my program is crashing at hte line
char* buffer = new char[size];
saying could not allocate memory.

Any solution to this problem?

---------------------
ifstream oldfile(31oct20 03.xls, ios::in|ios::bi nary|ios::ate);
long size = oldfile.tellg() ;
char* buffer = new char[size];
oldfile.seekg (0, ios::beg);
oldfile.read(bu ffer,size);

ofstream weekrep(stime_1 , ios::binary||io s::out);
weekrep.write(b uffer,size);
-------------
Regards,
Vasanth

[.oO LGV Oo.]

Re: file copying in c++


"vasanth kumar" <vasanth.kumar@ eds.com> a écrit dans le message de news:bo2srl$o8q @nfs0.sdrc.com. ..
Hi,

I have a file 31oct2003.xls. I want to make a copy of this file with a new name, say:2nov2003.xl s. But my program is crashing at hte line
char* buffer = new char[size];
saying could not allocate memory.

Any solution to this problem?

---------------------
ifstream oldfile(31oct20 03.xls, ios::in|ios::bi nary|ios::ate);
long size = oldfile.tellg() ;
char* buffer = new char[size];
oldfile.seekg (0, ios::beg);
oldfile.read(bu ffer,size);

ofstream weekrep(stime_1 , ios::binary||io s::out);
weekrep.write(b uffer,size);
-------------
Regards,
Vasanth
I might be wrong, but I'd say that the value of size is zero... Chech this value first.

[Jacek Dziedzic]

Re: file copying in c++

"vasanth kumar" <vasanth.kumar@ eds.com> wrote in message
news:bo2srl$o8q @nfs0.sdrc.com. ..[color=blue]
> Hi,
> I have a file 31oct2003.xls. I want to make a copy of this file
> with a new name, say:2nov2003.xl s. But my program is
> crashing at hte line char* buffer = new char[size];
> saying could not allocate memory.[/color]

Check what size is before the new[].

HTH,
- J.

PS. Do not, under any circumstances, post in HTML to a ng,
especially this one or you'll get flamed.

[Mike Wahler]

Re: file copying in c++

".oO LGV Oo." <_NOSPAM_legean tvert@tiscali.f r> wrote in message
news:bo31is$og8 $1@news.tiscali .fr...
[color=blue]
> I might be wrong, but I'd say that the value of size is zero... Chech
> this value first.[/color]


new char[0] is valid (although obviously not what OP wants).

I suspect OP is simply requesting more memory than the
host environment can provide.

-Mike