14.2.2 Simple Output

Once a file has been opened for writing a string can be written to the file using the fputs function. The following example shows how to write the string ‘Free Software is needed for Free Science’ to the file ‘free.txt’.

filename = "free.txt";
fid = fopen (filename, "w");
fputs (fid, "Free Software is needed for Free Science");
fclose (fid);

Built-in Function: fputs (fid, string)

Write a string to a file with no formatting.

Return a non-negative number on success and EOF on error.

See also: scanf, sscanf, fread, fprintf, fgets, fscanf.

A function much similar to fputs is available for writing data to the screen. The puts function works just like fputs except it doesn't take a file pointer as its input.

Built-in Function: puts (string)

Write a string to the standard output with no formatting.

Return a non-negative number on success and EOF on error.