Solved

File handling in G++

Posted on 2004-04-26
8
652 Views
Last Modified: 2010-04-01
Hi,
 I want to know the syntax for initializing a stream for input using g++.
What's wrong with:

#include<fstream>
....
ifstream fin;
fin.open("Myfile.txt");

0
Comment
Question by:combiofriends
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
8 Comments
 
LVL 6

Expert Comment

by:Mafalda
ID: 10918855
I would suggest

#include <fstream>
using namespace std; // probably you forgot to specify the namespace usage

fstream fin("Myfile.txt", ios_base::in);
0
 
LVL 6

Expert Comment

by:Mafalda
ID: 10918866
If you insist on using ifstream then

#include<fstream>
using namespace std;

....
ifstream fin;
fin.open("Myfile.txt");

or
#include<fstream>
using std::ifstream;

....
ifstream fin;
fin.open("Myfile.txt");

0
 
LVL 6

Accepted Solution

by:
Mafalda earned 25 total points
ID: 10918886
What error do you receive ?
A compilation error or a runtime error ?
For a runtime error look where you put the file ..
0
 
LVL 30

Assisted Solution

by:Axter
Axter earned 25 total points
ID: 10922905
I recommend using prefix, instead of adding the type to the global namespace.

#include<fstream>


std::ifstream fin;  //Put std:: in front
fin.open("Myfile.txt");
0
 
LVL 6

Expert Comment

by:Mafalda
ID: 11194431
I think that both axter and myself gave a solution.
I recommend a split
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

IntroductionThis article is the second in a three part article series on the Visual Studio 2008 Debugger.  It provides tips in setting and using breakpoints. If not familiar with this debugger, you can find a basic introduction in the EE article loc…
Go is an acronym of golang, is a programming language developed Google in 2007. Go is a new language that is mostly in the C family, with significant input from Pascal/Modula/Oberon family. Hence Go arisen as low-level language with fast compilation…
The goal of the video will be to teach the user the concept of local variables and scope. An example of a locally defined variable will be given as well as an explanation of what scope is in C++. The local variable and concept of scope will be relat…
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

632 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question