Creating files in C

Question

I want to create a file using C    but I have no idea how to do it  For example I want to create a text file named Hello txt    Can anyone help me

User · Answer

include  lt iostream gt   include  lt fstream gt   include  lt string gt  using namespace std   string filename     tmp filename txt    int main       std  ofstream o filename c str        o  lt  lt   Hello  World n   lt  lt  std  endl     return 0      This is what I had to do in order to use a variable for the filename instead of a regular string

User · Answer

include  lt iostream gt   include  lt fstream gt   int main       std  ofstream o  Hello txt       o  lt  lt   Hello  World n   lt  lt  std  endl     return 0

User · Answer

One way to do this is to create an instance of the ofstream class  and use it to write to your file  Here s a link to a website that has some example code  and some more information about the standard tools available with most implementations of C     ofstream reference  For completeness  here s some example code      using ofstream constructors   include  lt iostream gt   include  lt fstream gt     std  ofstream outfile   test txt     outfile  lt  lt   my text here    lt  lt  std  endl   outfile close      You want to use std  endl to end your lines  An alternative is using   n  character  These two things are different  std  endl flushes the buffer and writes your output immediately while   n  allows the outfile to put all of your output into a buffer and maybe write it later

User · Answer

I am working with turbo c   compiler so namespace std is not used by me Also i am familiar with turbo      include lt iostream h gt   include lt iomanip h gt   include lt conio h gt   include lt fstream h gt    required while dealing with files void main      clrscr    ofstream fout    object created   fout   fout open  your desired file name   extension    fout lt  lt  contents to be written inside the file  lt  lt endl  fout close    getch         After running the program the file will be created inside the bin folder in your compiler folder itself

User · Answer

One way to do this is to create an instance of the ofstream class  and use it to write to your file  Here s a link to a website that has some example code  and some more information about the standard tools available with most implementations of C     ofstream reference  For completeness  here s some example code      using ofstream constructors   include  lt iostream gt   include  lt fstream gt     std  ofstream outfile   test txt     outfile  lt  lt   my text here    lt  lt  std  endl   outfile close      You want to use std  endl to end your lines  An alternative is using   n  character  These two things are different  std  endl flushes the buffer and writes your output immediately while   n  allows the outfile to put all of your output into a buffer and maybe write it later

User · Answer

Here is my solution    include  lt fstream gt   int main         std  ofstream   Hello txt        return 0      File  Hello txt  is created even without ofstream name  and this is the difference from Mr  Boiethios answer

User · Answer

include  lt iostream gt   include  lt fstream gt   int main       std  ofstream o  Hello txt       o  lt  lt   Hello  World n   lt  lt  std  endl     return 0

User · Answer

Do this with a file stream  When a std  ofstream is closed  the file is created  I personally like the following code  because the OP only asks to create a file  not to write in it    include  lt fstream gt   int main         std  ofstream file    Hello txt            Hello txt has been created here     The temporary variable file is destroyed right after its creation  so the stream is closed and thus the file is created

User · Answer

I am working with turbo c   compiler so namespace std is not used by me Also i am familiar with turbo      include lt iostream h gt   include lt iomanip h gt   include lt conio h gt   include lt fstream h gt    required while dealing with files void main      clrscr    ofstream fout    object created   fout   fout open  your desired file name   extension    fout lt  lt  contents to be written inside the file  lt  lt endl  fout close    getch         After running the program the file will be created inside the bin folder in your compiler folder itself

User · Answer

One way to do this is to create an instance of the ofstream class  and use it to write to your file  Here s a link to a website that has some example code  and some more information about the standard tools available with most implementations of C     ofstream reference  For completeness  here s some example code      using ofstream constructors   include  lt iostream gt   include  lt fstream gt     std  ofstream outfile   test txt     outfile  lt  lt   my text here    lt  lt  std  endl   outfile close      You want to use std  endl to end your lines  An alternative is using   n  character  These two things are different  std  endl flushes the buffer and writes your output immediately while   n  allows the outfile to put all of your output into a buffer and maybe write it later

User · Answer

include  lt iostream gt   include  lt fstream gt   include  lt string gt  using namespace std   string filename     tmp filename txt    int main       std  ofstream o filename c str        o  lt  lt   Hello  World n   lt  lt  std  endl     return 0      This is what I had to do in order to use a variable for the filename instead of a regular string

User · Answer

include  lt iostream gt   include  lt fstream gt   int main       std  ofstream o  Hello txt       o  lt  lt   Hello  World n   lt  lt  std  endl     return 0

User · Answer

include  lt iostream gt   include  lt fstream gt   int main       std  ofstream o  Hello txt       o  lt  lt   Hello  World n   lt  lt  std  endl     return 0

User · Answer

use c methods FILE  fp  fopen  filename   mode                          fclose fp      mode means a for appending    r for reading  w for writing            using ofstream constructors         include  lt iostream gt          include  lt fstream gt          std  string input  some text to write       std  ofstream outfile   test txt         outfile  lt  lt input  lt  lt  std  endl          outfile close

User · Answer

Do this with a file stream  When a std  ofstream is closed  the file is created  I personally like the following code  because the OP only asks to create a file  not to write in it    include  lt fstream gt   int main         std  ofstream file    Hello txt            Hello txt has been created here     The temporary variable file is destroyed right after its creation  so the stream is closed and thus the file is created

User · Answer

One way to do this is to create an instance of the ofstream class  and use it to write to your file  Here s a link to a website that has some example code  and some more information about the standard tools available with most implementations of C     ofstream reference  For completeness  here s some example code      using ofstream constructors   include  lt iostream gt   include  lt fstream gt     std  ofstream outfile   test txt     outfile  lt  lt   my text here    lt  lt  std  endl   outfile close      You want to use std  endl to end your lines  An alternative is using   n  character  These two things are different  std  endl flushes the buffer and writes your output immediately while   n  allows the outfile to put all of your output into a buffer and maybe write it later

User · Answer

use c methods FILE  fp  fopen  filename   mode                          fclose fp      mode means a for appending    r for reading  w for writing            using ofstream constructors         include  lt iostream gt          include  lt fstream gt          std  string input  some text to write       std  ofstream outfile   test txt         outfile  lt  lt input  lt  lt  std  endl          outfile close

User · Answer

Here is my solution    include  lt fstream gt   int main         std  ofstream   Hello txt        return 0      File  Hello txt  is created even without ofstream name  and this is the difference from Mr  Boiethios answer

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