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| <h3 class="section">4.21 <code>fputs</code>—write a character string in a file or stream</h3> |
| |
| <p><a name="index-fputs-186"></a><a name="index-g_t_005ffputs_005fr-187"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <stdio.h> |
| int fputs(const char *<var>s</var>, FILE *<var>fp</var>); |
| |
| #include <stdio.h> |
| int _fputs_r(struct _reent *<var>ptr</var>, const char *<var>s</var>, FILE *<var>fp</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| <code>fputs</code> writes the string at <var>s</var> (but without the trailing null) |
| to the file or stream identified by <var>fp</var>. |
| |
| <p><code>_fputs_r</code> is simply the reentrant version of <code>fputs</code> that takes |
| an additional reentrant struct pointer argument: <var>ptr</var>. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| If successful, the result is <code>0</code>; otherwise, the result is <code>EOF</code>. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| ANSI C requires <code>fputs</code>, but does not specify that the result on |
| success must be <code>0</code>; any non-negative value is permitted. |
| |
| <p>Supporting OS subroutines required: <code>close</code>, <code>fstat</code>, <code>isatty</code>, |
| <code>lseek</code>, <code>read</code>, <code>sbrk</code>, <code>write</code>. |
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