Need file write help - Overclock.net

Pooping^fish · 03-29-08

Well, after long discussion and bugging of Mr. Hobo (as the usual) we couldn't get this going.
I need to ask the user to input the name of a file, then the app then uses what they entered for the name of the file to be written and saved.
Tried everything from const to string and we it gives an error somewhere.

Help please?

Code:

#include <string>
#include <iostream>
#include <fstream>
using namespace std; 
int main() {
 const char * filename; //variable to store file name?
ofstream the_file; //variable to refer to stream to write to file ?
  
    cout<<"what do you want the name of your webpage to be? NOT the title!";
    cin>>filename; 
// open stream/open file of output?
the_file.open (&filename,ios::out);
return 0;
}

What type of loop would I use?
I need to ask multiple questions and wrap different tags around the users input for each question.

loony · 03-29-08

Whats this being done in? VB, C++, C#

The Bartender Paradox · 03-29-08

A few things wrong I see, assuming its C++.

First, where you declare the filename variable, you have declared it as a constant. When you declare a var as a constant, that means you cant change it anywhere in your program. Notice later you try to read into filename. Also you are probably going to want to make filename an array or a string. Here is what I'd write for your code.

Code:

#include <string>
#include <iostream>
#include <fstream>

using namespace std; 

int main()
{
   char filename[51]; //variable to store file name //declares an array of characters to store the file name, 50 chars long. 
   ofstream the_file; //variable to refer to stream to write to file
  
   cout <<"What do you want the name of your webpage to be? NOT the title!";
   cin  >> filename; //depending on what you want to allow to be as the file name, consider using cin.get?

//open stream/open file of output? //you don't need to have all that other junk in there.
   the_file.open(filename); 
   
   return 0;
}

As for loops, probably a while or dowhile loops, depending on what you want done.

Pooping^fish · 03-29-08

Sweet, thankyou. That worked.
I figured out I guess I dont exactly need to use a loop, perhaps a function and string to finish this. It will ask multiple questions requiring user input, and it will put text around (begginning and end) of the input.

Im confused as exactly how to get it to take input from the user and put the specified text around that. Which one side will differ from another.

The Bartender Paradox · 03-29-08

Will the surrounding tags depend on the answers or the questions? If the tags depend on the question you could follow something like:

Write opening tag 1 to file
ask question 1
write answer to question 1 to the file
write closing tag 1.
write opening tag 2
ask question 2 .....

If the tags depend on the answer you would have to find some way to temporarily store the answer, in a string, array, etc. example:

Ask question 1.
store answer 1 in an array
analyze answer 1 to choose which tags to use
write opening tag 1 to file
write answer 1 to file
write closing tag 1.
ask question 2....

Pooping^fish · 03-29-08

Code:

#include <string>
#include <iostream>
#include <fstream>

using namespace std; 

int main()
{
   
   char filename[51]; //variable to store file name //declares an array of characters to store the file name, 50 chars long. 
  
   cout <<"What do you want the name of your webpage to be? NOT the title!";
   cin  >> filename; //depending on what you want to allow to be as the file name, consider using cin.get?
   
string titlea = ("<title>");
string titleb = ("</title>");
    string title = ("titlea, title, titleb");
   cout <<"What do you want the title to be?";
   cin >> title;
    ofstream the_file; //variable to refer to stream to write to file
   the_file.open(filename);

   system("PAUSE");
   return 0;
}

I tried adding more to include a title, then wrap the title tags around it.
The file still writes, and the file name is written, but my title isnt included at all?
I tried the_file title; and it just gave an error. Shouldnt I use this to write to the file?

Pooping^fish · 03-29-08

Bartender-Yes the tags will depend on the question.
Could I use seperate functions for each or would that be too much of a hassle?

The Bartender Paradox · 03-29-08

Quote:

Originally Posted by Pooping^fish

Code:

#include <string>
#include <iostream>
#include <fstream>

using namespace std; 

int main()
{
   
   char filename[51]; //variable to store file name //declares an array of characters to store the file name, 50 chars long. 
  
   cout <<"What do you want the name of your webpage to be? NOT the title!";
   cin  >> filename; //depending on what you want to allow to be as the file name, consider using cin.get?
   
string titlea = ("<title>");
string titleb = ("</title>");
    string title = ("titlea, title, titleb");
   cout <<"What do you want the title to be?";
   cin >> title;
    ofstream the_file; //variable to refer to stream to write to file
   the_file.open(filename);

   system("PAUSE");
   return 0;
}

I tried adding more to include a title, then wrap the title tags around it.
The file still writes, and the file name is written, but my title isnt included at all?
I tried the_file title; and it just gave an error. Shouldnt I use this to write to the file?

You should use the_file since its associated with the ofstream, but you forgot to include the << operator. By saying ofstream the_file you have created an object called the_file that behaves like cout but for files. Just like cout you have to include an operator. For example you can say the_file << "Hi" or the_file.width(4).

Quote:

Originally Posted by Pooping^fish

Bartender-Yes the tags will depend on the question.
Could I use seperate functions for each or would that be too much of a hassle?

If you want you can use a function, for small things like this I consider it a matter of style.

Pooping^fish · 03-30-08

Ive tried this.
What you said kindof confused me.
What do I use to have the variable title written to the file?
No matter what I try nothing biut the filename gets written. It completely ignores the input for the title.

Gen · 05-10-08

I'm probaly resurecting a dead horse but is this what you are after?

Code:

#include <iostream>
#include <fstream>
#include <string>

using namespace std;

int main()
{
	// Create the varible used to store the filename
	char filename[64];

	// Create the vaibles used to wrap a user input title around some tags
	string TitleStartTag = "<title>";
	string TitleEndTag = "</title>";
	string Title;


	// Get the filename from the user
	cout << "Please enter the filename: ";
	cin >> filename;
	cout << endl << endl;

	// Get the title from the user
	cout << "Please enter the title: ";
	cin >> Title;

	// Create the filestream object
	ofstream out_file;
	// Open the file
	out_file.open(filename);
	// Write the title varibles to the file
	out_file << TitleStartTag << Title << TitleEndTag << endl;
	// Always must ensure the file is closed when were done with it
	out_file.close();


	system("PAUSE");
	return 0;
}

Edit: Added comments

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Need file write help

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