<html lang="en"> <head> <title>Simple Output - Untitled</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Untitled"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="C_002dStyle-I_002fO-Functions.html#C_002dStyle-I_002fO-Functions" title="C-Style I/O Functions"> <link rel="prev" href="Opening-and-Closing-Files.html#Opening-and-Closing-Files" title="Opening and Closing Files"> <link rel="next" href="Line_002dOriented-Input.html#Line_002dOriented-Input" title="Line-Oriented Input"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="Simple-Output"></a> <p> Next: <a rel="next" accesskey="n" href="Line_002dOriented-Input.html#Line_002dOriented-Input">Line-Oriented Input</a>, Previous: <a rel="previous" accesskey="p" href="Opening-and-Closing-Files.html#Opening-and-Closing-Files">Opening and Closing Files</a>, Up: <a rel="up" accesskey="u" href="C_002dStyle-I_002fO-Functions.html#C_002dStyle-I_002fO-Functions">C-Style I/O Functions</a> <hr> </div> <h4 class="subsection">14.2.2 Simple Output</h4> <p>Once a file has been opened for writing a string can be written to the file using the <code>fputs</code> function. The following example shows how to write the string ‘<samp><span class="samp">Free Software is needed for Free Science</span></samp>’ to the file ‘<samp><span class="samp">free.txt</span></samp>’. <pre class="example"> filename = "free.txt"; fid = fopen (filename, "w"); fputs (fid, "Free Software is needed for Free Science"); fclose (fid); </pre> <!-- file-io.cc --> <p><a name="doc_002dfputs"></a> <div class="defun"> — Built-in Function: <b>fputs</b> (<var>fid, string</var>)<var><a name="index-fputs-777"></a></var><br> <blockquote><p>Write a string to a file with no formatting. <p>Return a non-negative number on success and EOF on error. <!-- Texinfo @sp should work but in practice produces ugly results for HTML. --> <!-- A simple blank line produces the correct behavior. --> <!-- @sp 1 --> <p class="noindent"><strong>See also:</strong> <a href="doc_002dscanf.html#doc_002dscanf">scanf</a>, <a href="doc_002dsscanf.html#doc_002dsscanf">sscanf</a>, <a href="doc_002dfread.html#doc_002dfread">fread</a>, <a href="doc_002dfprintf.html#doc_002dfprintf">fprintf</a>, <a href="doc_002dfgets.html#doc_002dfgets">fgets</a>, <a href="doc_002dfscanf.html#doc_002dfscanf">fscanf</a>. </p></blockquote></div> <p>A function much similar to <code>fputs</code> is available for writing data to the screen. The <code>puts</code> function works just like <code>fputs</code> except it doesn't take a file pointer as its input. <!-- file-io.cc --> <p><a name="doc_002dputs"></a> <div class="defun"> — Built-in Function: <b>puts</b> (<var>string</var>)<var><a name="index-puts-778"></a></var><br> <blockquote><p>Write a string to the standard output with no formatting. <p>Return a non-negative number on success and EOF on error. </p></blockquote></div> </body></html>