程序精简问题

只看该作者 · 2014-1-31 07:23

我编写了一个查找\,，\:，\r，\n的4层嵌套if语句的程序，将字符串中的所有上述4个字符删除，感觉有点绕，能不能帮忙精简一下，程序如下：
#include<string>
#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

//功能: 删除字符串中的"\r" "\n""\,""\:"
string StrClean(const string &strSource)
{
string strDes = strSource;
string::size_type index = 0;
do
{
      index = strDes.find("\\:");
         if (index != string::npos)
         {
            strDes = strDes.replace(index, strlen("\\:")," ");
         }
         else
         {
                     index = strDes.find("\\r");
                     if (index != string::npos)
                     {
                        strDes = strDes.replace(index, strlen("\\r")," ");
                     }
                     else
                     {
                        index = strDes.find("\\n");
                        if (index != string::npos)
                        {
                           strDes = strDes.replace(index, strlen("\\n")," ");
                        }
                        else
                        {
                           index = strDes.find("\\,");
                           if (index != string::npos)
                           {
                                 strDes = strDes.replace(index, strlen("\\,")," ");
                           }
                        }
                     }
         }
} while (string::npos != index);
return strDes;
}

int main()
{
string str = "123\:12\,esg\rsf\n if \: will my name\, gs\r\ntf\vs\r\nc",stre;
cout << "the source string is :" << str << endl;
//str.remove("\r\n");
//str.replace("\r\n", "");
stre=StrClean(str);
cout << "the destination string is :" << stre << endl;
return 0;

}