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📄 c-c++中结构体(struct)知识点强化 [c-c++].htm

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                  <BR>test&nbsp;*create()&nbsp; <BR>{&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;test&nbsp;*ls;<FONT 
                  color=green>//节点指针&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;test&nbsp;*le;<FONT 
                  color=green>//链尾指针&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;ls&nbsp;<FONT 
                  color=red>=</FONT>&nbsp;<FONT 
                  color=blue>new</FONT>&nbsp;test;<FONT 
                  color=green>//把ls指向动态开辟的堆内存地址&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=maroon>cin</FONT>&gt;&gt;ls-&gt;name&gt;&gt;ls-&gt;socre;&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;head=NULL;<FONT 
                  color=green>//进入的时候先不设置head指针指向任何地址,因为不知道是否一上来就输入null跳出程序&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;le=ls;<FONT 
                  color=green>//把链尾指针设置成刚刚动态开辟的堆内存地址,用于等下设置le-&gt;next,也就是下一个节点的位置&nbsp;</FONT> 
                  <BR>&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=blue>while</FONT>(strcmp(ls-&gt;name,"null")!=0)<FONT 
                  color=green>//创建循环条件为ls-&gt;name的值不是null,用于循环添加节点&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=blue>if</FONT>(head==NULL)<FONT 
                  color=green>//判断是否是第一次进入循环&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;head=ls;<FONT 
                  color=green>//如果是第一次进入循环,那么把引导进入链表的指针指向第一次动态开辟的堆内存地址&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=blue>else</FONT>&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;le-&gt;next=ls;<FONT 
                  color=green>//如果不是第一次进入那么就把上一次的链尾指针的le-&gt;next指向上一次循环结束前动态创建的堆内存地址&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;le=ls;<FONT 
                  color=green>//设置链尾指针为当前循环中的节点指针,用于下一次进入循环的时候把上一次的节点的next指向上一次循环结束前动态创建的堆内存地址&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ls=<FONT 
                  color=blue>new</FONT>&nbsp;test;<FONT 
                  color=green>//为下一个节点在堆内存中动态开辟空间&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=maroon>cin</FONT>&gt;&gt;ls-&gt;name&gt;&gt;ls-&gt;socre;&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp; <BR>&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;le-&gt;next=NULL;<FONT 
                  color=green>//把链尾指针的next设置为空,因为不管如何循环总是要结束的,设置为空才能够在循环显链表的时候不至于死循环&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=blue>delete</FONT>&nbsp;ls;<FONT 
                  color=green>//当结束的时候最后一个动态开辟的内存是无效的,所以必须清除掉&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=blue>return</FONT>&nbsp;head;<FONT 
                  color=green>//返回链首指针&nbsp;</FONT> <BR>}&nbsp; <BR>&nbsp; 
                  <BR><FONT 
                  color=blue>void</FONT>&nbsp;showl(test&nbsp;*head)&nbsp; 
                  <BR>{&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=maroon>cout</FONT>&lt;&lt;"链首指针:"&lt;&lt;head&lt;&lt;endl;&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=blue>while</FONT>(head)<FONT 
                  color=green>//以内存指向为null为条件循环显示先前输入的内容&nbsp;</FONT> 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=maroon>cout</FONT>&lt;&lt;head-&gt;name&lt;&lt;"|"&lt;&lt;head-&gt;socre&lt;&lt;endl;&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;head=head-&gt;next;&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp; <BR>}&nbsp; <BR>&nbsp; 
                  <BR><FONT color=blue>void</FONT>&nbsp;<FONT 
                  color=blue>main</FONT>()&nbsp; <BR>{&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;showl(create());&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=maroon>cin</FONT>.get();&nbsp; 
                  <BR>&nbsp;&nbsp;&nbsp;&nbsp;<FONT 
                  color=maroon>cin</FONT>.get();&nbsp; <BR>} </P>
                  <P>  上面的代码我们是要达到一个目的:就是要存储你输入的人名和他们的得分,并且以链状结构把它们组合成一个链状结构。 
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