Writing lines to a file

[dlwjiang]

what function would you use to write a line to a file?

If instead of printf("hello") to the terminal, how would I get that into a file? I can do character by character, but the basic tutorial and even this book (The C Book — The Preprocessor) don't seem to deal with lines.

I can use output>file in the command line since it's printed perfectly on the terminal, but I need a way for it to do it internally.

**also, when I do ./a.out output>file, the file is created with the correct text, but the terminal also throws a segmentation error, it doesn't affect anything but it seems out of place, any ideas about that?

[Bayint Naung]

fprintf(stdout, "hello World\n");
Read printf family documentation (printf,fprintf,vfprintf,sprintf,...)

FILE *fout; // out file
fout = fopen("eg.txt","w");    //read fopen() documentation
if(fout == NULL) { //error opening file
  //handle it
}
fprintf(fout,"Hello World!\n");   // write to file
fflush(fout);                // read doc

// after you are done with the file
fclose(fout);              // close the file, read doc for details

[Dante Wingates]

I can see your problem is solved but just as a comment... When you dont know something, you can always create a function that does what you need and then call it later everytime you need it.

Sonner or later we all find something that cant be done by using some library function... Thats why I normally try to understand and recreate everything I use... Well if you start thinking like I do soon you will be willing to learn assembly language, but thats not a bad thing...

If you know how to send a single char to a file, then you can recreate a function like fputs, and call it later...

[Bayint Naung]

Probably he hasn't even learned to use array, pointer or even function!