String output to ofstream object

marinme

Hello! I'm having a problem writing string objects to a file. I just learned file I/O and am not quite sure what the problem is. I am using a string object (basic_string<char *> ) and it doesn't seem to like what I am doing. here is some sample code:

#include <fstream>
using namespace std;
#include <cstring>

ofstream myFile("file.txt");

int main()
{
   string myBuffer("Some text");//from the std namespace
   myFile.write(myBuffer, myBuffer.size());
   myFile.close();
   return 0;
}

this does not like my string going into the file. I have also tried the extraction operation << with it, but it says it is not defined... I thought the function fstream & operator<<(string & someString) was defined in the string class... any help?

NewbieStats

http://www.codeproject.com/script/comments/forums.asp?forumid=1647&select=1071428&df=100&tid=1071234#xx1071428xx[^] Read the two post ive made... using MFC and Windows App... There are alot of ways to i/o... If none of those suit ur needs then ill try and help you with another... /* Just a Human Trying to Live in a Computers World. */

marinme

well, that would work using the CString class, but I'm trying to use the typedef'd string class from basic_string<char *> I believe it is in the <string> header file... I've never used the CString class(that I know of, and I'm trying to stick to using the one I'm used to.. It doesn't work using

#include <string>
basic_string<char *> myString
myOutputFile << myString;

Michael Dunn

myFile.write(myBuffer, myBuffer.size());

That won't do what you want. You want to write the contents of the string, not the object itself, so do:

myFile.write(myBuffer.c_str(), myBuffer.size());

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marinme

thanks very much! that's what I was looking for