第15周报告2--学会操作字符数组(改进版）

第15周报告2
实验目的：学会操作字符数组

实验内容：完成对字符数组的操作

* 程序头部注释开始
* 程序的版权和版本声明部分
* Copyright (c) 2011, 烟台大学计算机学院学生
* All rights reserved.
* 文件名称：<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br> * 作<wbr><wbr><wbr><wbr><wbr><wbr> 者：<wbr><wbr><wbr><wbr>雷恒鑫<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br> * 完成日期：<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>2011<wbr><wbr><wbr><wbr> 年<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>11<wbr><wbr> 月<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>30<wbr><wbr> 日<br> * 版本号：<wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>v2<wbr><wbr><br><br> * 对任务及求解方法的描述部分<br> * 输入描述：要处理的字符串在程序中通过赋初值完成<br> * 问题描述：求出字符数组中字符的个数及计算句子中各字符出现的频数<br> * 程序输出：字符数组中字符的个数和句子中各字符出现的频数<br> * 程序头部的注释结束<br> #include&lt;iostream&gt;<br> using namespace std;<br> int length(char arr[]);<wbr><wbr> //函数声明<br> void output_frequency( char str[]);<br> int main(void)<wbr><wbr><wbr><wbr><wbr><wbr> //不要对main函数有任何改动<br> {<br><wbr><wbr>char str[]="he threw three free throws";<br><wbr><wbr>cout&lt;&lt;"要处理的字符串为："&lt;&lt;str&lt;&lt;endl;<br><wbr><wbr>cout&lt;&lt;"字符串长度为："&lt;&lt;length(str)&lt;&lt;endl;<wbr><wbr><br><wbr><wbr>cout&lt;&lt;"字符串中各字符出现的频数为：";<br><wbr><wbr>output_frequency(str);<br><wbr><wbr>cout&lt;&lt;endl;<br><wbr><wbr>return 0;<br> }</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

int length(char arr[])
{
<wbr><wbr>int i=0,f=0;<br><wbr><wbr>while (arr[i]!='\0')<br><wbr><wbr>{<br><wbr><wbr><wbr><wbr>f=f+1;<br><wbr><wbr><wbr><wbr>i=i+1;<br><wbr><wbr>}<br><wbr><wbr>return f;<br> }</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

void output_frequency(char str[])
{
<wbr><wbr>int i=0,j=0,f=0,num,k=0;<br><wbr><wbr>num=length(str);<br><wbr><wbr>while (i&lt;num)<br><wbr><wbr>{<br><wbr><wbr><wbr><wbr>k=j;<br><wbr><wbr><wbr><wbr>do<br><wbr><wbr><wbr><wbr>{<br><wbr><wbr><wbr><wbr><wbr><wbr>j=j-1;<br><wbr><wbr><wbr><wbr><wbr><wbr>if (j&lt;0)<br><wbr><wbr><wbr><wbr><wbr><wbr>{<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>f=f+1;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>j=k;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>j=j+1;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>while(j&lt;num)<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>{<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>if (str[i]==str[j])<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>{<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>f=f+1;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>j=j+1;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>}<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>else j=j+1;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>continue;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>}<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>cout&lt;&lt;str[i]&lt;&lt;"-"&lt;&lt;f&lt;&lt;"; ";<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>break<wbr>;<br><wbr><wbr><wbr><wbr><wbr><wbr>}<br><wbr><wbr><wbr><wbr>}while(str[i]!=str[j]);<br><wbr><wbr><wbr><wbr>i=i+1;<br><wbr><wbr><wbr><wbr>j=i;<br><wbr><wbr><wbr><wbr>f=0;<br><wbr><wbr>}<br><wbr><wbr>cout&lt;&lt;endl;<br><wbr><wbr>return;<br> }</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>

<wbr><wbr><wbr><wbr><wbr><wbr><br><br> 运行结果：</wbr></wbr></wbr></wbr></wbr></wbr>

经验积累：
1.break语句也可以起到与goto语句同样的效果。
2.
3.

上机感言：

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