Problems with std::ofstream function on std::ios::binary parameter

josip cagalj

Hi, in my app I have the following code:

std::ofstream f(sPath.GetBuffer(0), std::ios::binary);
f.write((const char \*) pBytes, dwSize);
f.close();

I also include 'iostream.h' #include I'm getting error: -error C2027: use of undefined type 'basic_ios<char,struct> >' -error C2065: 'binary' : undeclared identifier -error C2079: 'f' uses undefined class 'basic_ofstream<char,struct> >' -error C2078: too many initializers -error C2228: left of '.write' must have class/struct/union type -error C2228: left of '.close' must have class/struct/union type Help? Thanks! P.S. Using vc++ 6 on WinXP SP3

Cedric Moonen

josip cagalj wrote:

I also include 'iostream.h'

You should include <fstream> also. And iostream.h is deprecated, you should include <iostream> instead (without the .h).

Cédric Moonen Software developer
Charting control [v1.5] OpenGL game tutorial in C++

josip cagalj

Thanks! That's it.

Stuart Dootson

josip cagalj wrote:

I also include 'iostream.h'

As well as adding in #include <fstream>, let's change that #include <iostream.h> to #include <iostream> - that's what you should be including for standard stream support

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

josip cagalj

Still one thing more, how to test why std::ofstream failed. My code:

std::ofstream f(sPath.GetBuffer(0), std::ios::binary);

fails to open file, I test that with f.is_open(), but why? Thanks

josip cagalj

Thanks to you also. Please see my new post.

Stuart Dootson

Check the path you're supplying to the ofstream constructor - this little C++ program works for me, which demonstrates the library doing the right thing:

#include <iostream>
#include <fstream>

int main(int, char**)
{
std::ofstream f("a.a", std::ios::binary);
if (!f.is_open())
{
std::cerr << "File open failed" << std::endl;
}
else
{
f << "Hello";
f.close();
}
}

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p