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mov
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 Posted: Thu Oct 28, 2004 5:29 pm Post subject: how to save to a text file |
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I am a newbie, please someone tell me how to create a text file and save it
using c++.
thanks
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Victor Bazarov
Guest
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| Posted: Thu Oct 28, 2004 5:37 pm Post subject: Re: how to save to a text file |
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mov wrote:
| Quote: | I am a newbie, please someone tell me how to create a text file and save it
using c++.
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Create an std::ofstream object. Write to it using <<.
#include
int main()
{
std::ofstream os("text_file.txt");
os << "Hello world!";
}
V
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Aggro
Guest
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| Posted: Thu Oct 28, 2004 7:21 pm Post subject: Re: how to save to a text file |
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Victor Bazarov wrote:
| Quote: | #include
int main()
{
std::ofstream os("text_file.txt");
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// Check could we open file for writing or not
if( os )
{
os << "Hello world!";
}
else
{
// This could happen for example if file already exists
// and it is read-only or user doesn't have permission to write
// into it.
std::cout << "Failed to open file";
}
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Victor Bazarov
Guest
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| Posted: Thu Oct 28, 2004 7:28 pm Post subject: Re: how to save to a text file |
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Aggro wrote:
| Quote: | Victor Bazarov wrote:
#include
int main()
{
std::ofstream os("text_file.txt");
// Check could we open file for writing or not
if( os )
{
os << "Hello world!";
}
else
{
// This could happen for example if file already exists
// and it is read-only or user doesn't have permission to write
// into it.
std::cout << "Failed to open file";
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I'd actually output that to std::cerr ...
V
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Karthik Kumar
Guest
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| Posted: Sun Oct 31, 2004 3:08 am Post subject: Re: how to save to a text file |
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Victor Bazarov wrote:
| Quote: | mov wrote:
I am a newbie, please someone tell me how to create a text file and
save it using c++.
Create an std::ofstream object. Write to it using <<.
#include
int main()
{
std::ofstream os("text_file.txt");
os << "Hello world!";
}
V
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Isn't it important to close the file after writing it ?
os.close(); ?
--
Karthik. http://akktech.blogspot.com .
'Remove _nospamplz from my email to mail me.'
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John Harrison
Guest
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| Posted: Sun Oct 31, 2004 9:42 am Post subject: Re: how to save to a text file |
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| Quote: |
Isn't it important to close the file after writing it ?
os.close(); ?
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NO!!
This is C++, the ofstream destructor does that for you. This does seem to be
a very common misunderstanding however. I guess programmers get it drilled
into them from an early age that you must always close files that no-one
imagines that it could be any different in C++.
john
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