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.xls. 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(31oct2003.xls, ios::in|ios::binary|ios::ate);
long size = oldfile.tellg();
char* buffer = new char[size];
oldfile.seekg (0, ios::beg);
oldfile.read(buffer,size);

ofstream weekrep(stime_1, ios::binary||ios:ut);
weekrep.write(buffer,size);

 

[.oO LGV Oo.]

"vasanth kumar" <[email protected]> a écrit dans le message de Hi,

I have a file 31oct2003.xls. I want to make a copy of this file with a new name, say:2nov2003.xls. 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(31oct2003.xls, ios::in|ios::binary|ios::ate);
long size = oldfile.tellg();
char* buffer = new char[size];
oldfile.seekg (0, ios::beg);
oldfile.read(buffer,size);

ofstream weekrep(stime_1, ios::binary||ios:ut);
weekrep.write(buffer,size);

 

[Jacek Dziedzic]

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

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]

I might be wrong, but I'd say that the value of size is zero... Chech
this value first.

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