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);

: fputs (fid, string)

: status = fputs (fid, string)

Write the string string to the file with file descriptor fid.

The string is written to the file with no additional formatting. Use fdisp instead to automatically append a newline character appropriate for the local machine.

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

See also: fdisp, fprintf, fwrite, fopen.

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.

: puts (string)

: status = puts (string)

Write a string to the standard output with no formatting.

The string is written verbatim to the standard output. Use disp to automatically append a newline character appropriate for the local machine.

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

See also: fputs, disp.