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diff --git a/devdocs/c/io%2Fgetchar.html b/devdocs/c/io%2Fgetchar.html new file mode 100644 index 00000000..51e96aa8 --- /dev/null +++ b/devdocs/c/io%2Fgetchar.html @@ -0,0 +1,49 @@ + <h1 id="firstHeading" class="firstHeading">getchar</h1> <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code><stdio.h></code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl"> <td class="t-dcl-nopad"> <pre data-language="c">int getchar( void );</pre> +</td> <td class="t-dcl-nopad"> </td> <td class="t-dcl-nopad"> </td> </tr> </table> <p>Reads the next character from <code><a href="std_streams" title="c/io/std streams">stdin</a></code>.</p> +<p>Equivalent to <code><a href="http://en.cppreference.com/w/c/io/fgetc"><span class="kw828">getc</span></a><span class="br0">(</span><a href="http://en.cppreference.com/w/c/io/std_streams"><span class="kw885">stdin</span></a><span class="br0">)</span></code>.</p> +<h3 id="Parameters"> Parameters</h3> <p>(none)</p> +<h3 id="Return_value"> Return value</h3> <p>The obtained character on success or <code><a href="../io" title="c/io">EOF</a></code> on failure.</p> +<p>If the failure has been caused by end-of-file condition, additionally sets the <i>eof</i> indicator (see <code><a href="feof" title="c/io/feof">feof()</a></code>) on <code><a href="std_streams" title="c/io/std streams">stdin</a></code>. If the failure has been caused by some other error, sets the <i>error</i> indicator (see <code><a href="ferror" title="c/io/ferror">ferror()</a></code>) on <code><a href="std_streams" title="c/io/std streams">stdin</a></code>.</p> +<h3 id="Example"> Example</h3> <div class="t-example"> +<p>Demonstrates <code>getchar</code> with error checking</p> +<div class="c source-c"><pre data-language="c">#include <stdio.h> +#include <stdlib.h> + +int main(void) +{ + for (int ch; (ch = getchar()) != EOF;) // read/print "abcde" from stdin + printf("%c", ch); + + // Test reason for reaching EOF. + if (feof(stdin)) // if failure caused by end-of-file condition + puts("End of file reached"); + else if (ferror(stdin)) // if failure caused by some other error + { + perror("getchar()"); + fprintf(stderr, "getchar() failed in file %s at line # %d\n", + __FILE__, __LINE__ - 9); + exit(EXIT_FAILURE); + } + + return EXIT_SUCCESS; +}</pre></div> <p>Possible output:</p> +<div class="text source-text"><pre data-language="c">abcde +End of file reached</pre></div> </div> <h3 id="References"> References</h3> <ul> +<li> C23 standard (ISO/IEC 9899:2023): </li> +<ul><li> 7.21.7.6 The getchar function (p: TBD) </li></ul> +<li> C17 standard (ISO/IEC 9899:2018): </li> +<ul><li> 7.21.7.6 The getchar function (p: TBD) </li></ul> +<li> C11 standard (ISO/IEC 9899:2011): </li> +<ul><li> 7.21.7.6 The getchar function (p: 332) </li></ul> +<li> C99 standard (ISO/IEC 9899:1999): </li> +<ul><li> 7.19.7.6 The getchar function (p: 298) </li></ul> +<li> C89/C90 standard (ISO/IEC 9899:1990): </li> +<ul><li> 4.9.7.6 The getchar function </li></ul> +</ul> <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="fgetc" title="c/io/fgetc"> <span class="t-lines"><span>fgetc</span><span>getc</span></span></a></div> </td> <td> gets a character from a file stream <br> <span class="t-mark">(function)</span> </td> +</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/io/c/getchar" title="cpp/io/c/getchar">C++ documentation</a></span> for <code>getchar</code> </td> +</tr> </table> <div class="_attribution"> + <p class="_attribution-p"> + © cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br> + <a href="https://en.cppreference.com/w/c/io/getchar" class="_attribution-link">https://en.cppreference.com/w/c/io/getchar</a> + </p> +</div> |