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C++: Declaring file

Started by DannyB Apr 29, 2004 at 9:00 AM 1 reply 250+ views

Original Post

Apr 29, 2004 at 9:00 AM

When creating an ofstream for output, is it possible to have a variable as part of the file path? Such as this. String text1 = "parse.txt"; ofstream outPrimary ("n:\test\" && text1, ios::app); I've tried many different things, not really sure what to use to conjoin. [edited by - DannyB on April 29, 2004 10:03:40 AM]

CodeMunkie

Apr 29, 2004 at 9:06 AM

Sure, just use the + operator on std::strings. I know the following will work:


std::string path = "n:\\test\\";
std::string filename = "parse.txt";

text1=path+filename;//now text1 holds "n:\\test\\parse.txt"


ofstream outPrimary(text1, ios::app);

[edited by - CodeMunkie on April 29, 2004 10:07:43 AM]

nonpop

Apr 29, 2004 at 9:14 AM

Want to do it without a temporary file?


string filename = "file.txt";
ofstream f ((string ("n:\\path\\") + filename).c_str ());

I wouldn''t recommend it, though.

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