Text File

[Shay9999]

How do I do something like this...

myfile.open ((filename)(".txt"));

or

ifstream myfile ((filename)(".txt"));

those aren't the actual codes, obviously, just asking how I can make the user make their own file name:
cin >> filename
and then make a file out of the name they made.

Please help!

Edit:

filename += ".txt"

myfile.open (filename);

this mix didn't work :'(

Edit:

Surprisingly, this cut down on those HUGE errors, but still doesn't work :'(


filename += ".txt"

myfile.open (("\"")folder("\""));

[firedraco]

std::string str;
std::cin>>str;
str+=".txt";
std::ifstream file(str.c_str());

[Chevytuff19]

Maybe make a string variable like string filename; and get the user to input the filename into that. Then, do something like Filename.append(".txt"). That should get you a filename and extension. Then maybe use the filename variable to create your file? I haven't tried this out as I am on my iPad, but in theory, it might work. :)

[Shay9999]

agh, neither one worked >_<

Here's the full code, if it helps:

#include <iostream>
#include <fstream>
#include <string>
#include <conio.h>
using namespace std;

int main () {
  string line;
  string name;
  string age;
  string time;
  string folder;
  

  cout<<"Please enter new text file name. Certain \
symbols are not accepted, check your computer's \
handbook for details(if you have already made a \
folder, press Enter)";
  cout<<endl;
  getline (cin, folder);
  cout<<endl;
  
  folder += ".txt";
  
  if (!folder.empty())
  {
  cout << "Enter your name";
  cout << endl;
  getline (cin, name);
  cout << endl;
  cout << "Enter your age";
  cout << endl;
  getline (cin, age);
  cout << endl;
  cout << "Enter the time";
  cout << endl;
  getline (cin, time);
  cout << endl;
  
  ofstream myfile;
  myfile.open (("\"") (folder) ("\""));
  myfile << name;
  myfile << endl;
  myfile << age;
  myfile << endl;
  myfile << time;
  myfile << endl;
  myfile.close();
  }
  
  else if (folder.empty())
  cout<<endl;
  
  

  
  ifstream myfile (("\"")folder("\""));
  if (myfile.is_open() && myfile.good())
  {
  cout<<"Here are your entries\n\n";                       

      getline (myfile, line);
      cout << "name:";
      cout << line;
      cout << endl;
      getline (myfile, line);
      cout << "age:";
      cout << line;
      cout << endl;
      getline (myfile, line);
      cout << "time submitted:";
      cout << line;
      cout << endl;

  myfile.close();
  }

  else
  cout << "Unable to open file"; 
  getch ();
  return 0;
}

it just won't recognize folder when it compiles, so I don't know if it's impossible for the person using the program to make a name of their own, or what, but it definitely should be possible.

[Zhuge]

Try std::string("\"") + folder + "\"" in the relevant locations.

[Shay9999]

LoL,

cout<<noob<<" asks, \"Where are the relevant locations?\"";
me = noob;

[Shay9999]

Ugh, I hate it when a problem can never be solved >_< Aggggh!

[writetonsharma]

locations you have to find.

if the filename is coming in parts and you want to join all the parts, you can do like this:

std::string filename = "c:\\windows";
filename += "\\system32";
filename += "\\cmd.exe";

myfile.open (filename); //going to open cmd.exe 

[Shay9999]

oh, I see... Alright, so if I go like string filename = "c:\\windows\\users\\desktop" or something of equal stature, it would place the direct file to the desktop. That's interesting, I'll test it in the morning.

[Shay9999]

Alright, well I still haven't figured this problem out yet, does anybody know how to make it possible for the user to enter in a variable and then to make a text document out of the word(s) they wrote? For example:

string filename;
cin>>filename;
myfile.open (filename);

Because that does not work.

[firedraco]

Use filename.c_str()

fstreams want a char* so you can't give it a normal std::string.

[Shay9999]

I do not understand, you mean change string filename into filename.c_str()?

I hate being unteachable >_< **** my brain =_=

[zb0S216C]

It's quite simple: myfile.open( filename.c_str( ) );

[Shay9999]

WOOT! TY Everyone! A special thanks to Framework for seeing me at my level of intelligence xD

Anyways, that worked out, but the getline functions are still screwing me xD

Whenever I have a getline (cin,string); it always skips that line and goes to the next one >_<

If you know how to fix that to, I'd love you for life xD

[zb0S216C]

Which if block does this problem occur?

Just to clarify, ofstream is used to write to a file. ifstream is used to read from a file.

[Shay9999]

TY for clarification, Framework. Here's the current code, and it's the very first if.
Note to self: I need to stop spamming out the forums xD

#include <iostream>
#include <fstream>
#include <string>
#include <conio.h>
using namespace std;

int main () {
  string line;
  string name;
  string age;
  string time;
  string folder;
  

  

  cout<<"Please enter new text file name. Certain symbols are not accepted, check your computer's handbook for details(if you have already made a folder, press Enter)";
  cout<<endl;
  cin >> folder;
  cout<<endl;
  "\"" + folder;  
  folder += ".txt\"";
  cout<<endl;
  
  if (!folder.empty())
  {
  cout << "Enter your name";
  cout << endl;
  getline (cin, name);//it skips this getline.
  cout << endl;
  cout << "Enter your age";
  cout << endl;
  getline (cin, age);
  cout << endl;
  cout << "Enter the time";
  cout << endl;
  getline (cin, time);
  cout << endl;
  
  ofstream myfile;
  myfile.open (folder.c_str());
  myfile << name;
  myfile << endl;
  myfile << age;
  myfile << endl;
  myfile << time;
  myfile << endl;
  myfile.close();
  }
  
  else if (folder.empty())
  {
  cout<<"Please give the name of your old folder.";
  cout<<endl;
  cin >> folder;
  cout<<endl;
  folder += ".txt\"";
  }
  
  ifstream myfile (folder.c_str());
  if (myfile.good())
  {
  cout<<"Here are your entries\n\n";                       

      getline (myfile, line);
      cout << "name:";
      cout << line;
      cout << endl;
      getline (myfile, line);
      cout << "age:";
      cout << line;
      cout << endl;
      getline (myfile, line);
      cout << "time submitted:";
      cout << line;
      cout << endl;

  myfile.close();
  }

  else
  cout << "Unable to open file"; 
  getch ();
  return 0;
}

[Shay9999]

Okay, I'm gonna head to bed, sorry I can't stay on for the answer to the mysterious getline skipage >_<

[zb0S216C]

You need to synchronize your input stream. This is done by calling a simple function:

if (!folder.empty())
{
    cin.sync( ); // Synchronize the stream.
    cout << "Enter your name";
    cout << endl;
    getline (cin, name);//it skips this getline.
    // ... 

You can read up on cin.sync( ) here: http://www.cplusplus.com/reference/iostream/istream/sync/

[Shay9999]

Thanks for all the help!