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Adding a file type

imtehnewb (19)
Hi guys Im trying to create a program where you can create a simple text file automatically after entering the name using fstream. Its for a system Im gonna work on and its crucial for me to succesfully do this since this is where all of it revolves.
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#include <iostream.h>
#include <fstream.h>

int main () {
char file [16];
cout<<"Enter text file: ";
cin>>file;
ofstream newFile();
newFile.open(file+".txt");
newFile.close();
return 0;
}


It says invalid use of addition or something. Is there any way to concat a ".txt" into the end of the file? Any help would be nice. Im only just learning all of this so I would appreciate any help and tips given.
Last edited on
Chervil (7320)
First the header files ending in .h are not standard C++. The code should look something like this:
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#include <iostream>
#include <fstream>
#include <cstring> // for strcat

using namespace std;

int main () 
{
    char file [80];
    cout << "Enter text file: ";
    cin >> file;
    strcat(file, ".txt");
    ofstream newFile(file);

    newFile.close();
    return 0;
}


or rather safer, using C++ std::string instead of a character array.
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#include <iostream>
#include <fstream>
#include <string> // for std::string

using namespace std;

int main () 
{
    string file;
    cout << "Enter text file: ";
    cin >> file;
    file +=  ".txt";
    ofstream newFile(file.c_str());

    newFile.close();
    return 0;
}
Last edited on
imtehnewb (19)
For some reason my code doesnt work if im not adding .h in the header files. Im using turbo c. Is there any difference with turbo c and c++? Btw I really appreciate your help. Ill try it as soon as I can.
Chervil (7320)
If you can possibly avoid it, don't use turbo c. It is extremely old and uses a non-standard (and buggy) dialect of the language. (I'm aware that some educational courses recommend it, which is unfortunate, as you will later have to un-learn some things).

Something like code::blocks would be better. http://www.codeblocks.org/
imtehnewb (19)
Its kinda the only available compiler at my school where I make the codes since I broke my laptop lol. So i have no choice but to use it.
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