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<h1>字符函数 - isprint</h1>
<p>原型：extern int isprint(int c);</p>
<p>用法：#include &lt;ctype.h></p>
<p>功能：判断字符c是否为可打印字符（含空格）</p>
<p>说明：当c为可打印字符（0x20-0x7e）时，返回非零值，否则返回零。</p>
举例：<pre><code class="language-c">
// isprint.c
#include &lt;syslib.h>
#include &lt;ctype.h>
main()
{
int c;
clrscr(); // clear screen
c='a';
printf("%c:%s\n",c,isprint(c)?"yes":"no");
c=' ';
printf("%c:%s\n",c,isprint(c)?"yes":"no");
c=0x7f;
printf("%c:%s\n",c,isprint(c)?"yes":"no");
getchar();
return 0;
}
</code></pre>相关函数：<a href="isgraph.html">isgraph</a>
<h1>字符函数 - isprint</h1>
<p>原型：extern int isprint(int c);</p>
<p>用法：#include &lt;ctype.h></p>
<p>功能：判断字符c是否为可打印字符（含空格）</p>
<p>说明：当c为可打印字符（0x20-0x7e）时，返回非零值，否则返回零。</p>
举例：<pre><code class="language-c">
// isprint.c
#include &lt;syslib.h>
#include &lt;ctype.h>
main()
{
int c;
clrscr(); // clear screen
c='a';
printf("%c:%s\n",c,isprint(c)?"yes":"no");
c=' ';
printf("%c:%s\n",c,isprint(c)?"yes":"no");
c=0x7f;
printf("%c:%s\n",c,isprint(c)?"yes":"no");
getchar();
return 0;
}
</code></pre>相关函数：<a href="isgraph.html">isgraph</a>