Vomume 1.Elementary Problem Solving->volume 1 string 401-Palindromes

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401-Palindromes(原题的连接)
这个题是我做UVA以来第一次1A.
#include<iostream>#include<string>using namespace std;int main(){    string s,s1,s2;    char c;    int len,i,f1,f2,f3;    while(cin>>s)    {        s1=s2=s;        len=s.size();        for(i=0;i<len/2;i++)        {            c=s[i];            s[i]=s[len-1-i];            s[len-1-i]=c;        }        if(s1==s)          f1=1;        else          f1=0;        f3=0;        s1=s;        for(i=0;i<len;i++)        {            switch(s[i])            {                case 'B':f3=1;break;                case 'C':f3=1;break;                case 'D':f3=1;break;                case 'F':f3=1;break;                case 'G':f3=1;break;                case 'K':f3=1;break;                case 'N':f3=1;break;                case 'P':f3=1;break;                case 'Q':f3=1;break;                case 'R':f3=1;break;                case '4':f3=1;break;                case '6':f3=1;break;                case '7':f3=1;break;                case '9':f3=1;break;            }            if(f3)            {                 f2=0;                 break;            }            else            {              f2=1;              if(s[i]=='E')      s[i]='3';              else if(s[i]=='J') s[i]='L';              else if(s[i]=='L') s[i]='J';              else if(s[i]=='S') s[i]='2';              else if(s[i]=='Z') s[i]='5';              else if(s[i]=='2') s[i]='S';              else if(s[i]=='3') s[i]='E';              else if(s[i]=='5') s[i]='Z';            }        }        if(f2==1)        {          for(i=0;i<len/2;i++)          {            c=s[i];            s[i]=s[len-1-i];            s[len-1-i]=c;          }          if(s1==s)            f2=1;          else            f2=0;        }        if(f1==0&&f2==0)        {           cout<<s2<<" -- is not a palindrome.";           cout<<endl;        }        else if(f1==1&&f2==0)        {            cout<<s2<<" -- is a regular palindrome.";            cout<<endl;        }        else if(f1==0&&f2==1)        {            cout<<s2<<" -- is a mirrored string.";            cout<<endl;        }        else        {            cout<<s2<<" -- is a mirrored palindrome.";            cout<<endl;        }        cout<<endl;    }    return 0;}