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来自「浙江大学计算机学院数据结构课程的教学课件」· HTM 代码 · 共 48 行

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<b><font face="Arial" size="4">〖<font color="#0033CC">example</font>〗<font color="#FF0033">string  insertion</font>
#include <string.h>&lt;string.h&gt;
#define   <font size="3">MAX_SIZE</font>   100         <font size="3" color="#FF0099">/* maximum size of  string  */</font>
char   string1  [<font size="3">MAX_SIZE</font> ]  , *s = string1;
char   string2  [<font size="3">MAX_SIZE</font>]  ,  *t  = string2;</font></b></pre>
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<pre align="left"><b><font face="Arial" size="4">void <font color="#FF0033">strnins</font> (char *s,  char  *t,  int i)
{  <font color="#FF0099" size="3"> / * insert string  t into  string  s at  position  i */</font>
	char string[<font size="3">MAX_SIZE</font>],  *temp = string;
	if  ( i < 0  &&  i > strlen ( s ) )  {
		fprintf ( stderr, " position is out bounds \ n ");
		exit (1);
	}
	if  (!strlen (s ))
		<font color="#FF0033">strcpy</font> ( s,  t);
	else   if (strlen ( t ))  {
		<font color="#FF0033">strncpy</font> ( temp, s, i);
		<font color="#FF0033">strcat</font> ( temp, t) ;
		<font color="#FF0033">strcat</font> ( temp,  (s + i ));
	<font color="#FF0033">	strcpy</font> ( s, temp );
	}
}

</font></b></pre>
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