将fly译成iob。编码规律：将字母a变成字母d，即变成其后的第三个字母，x编程a，y变成b，z变成c？

#Python 2.5 的代码:

import string
s = "safsdrjvgjmlxdf" #要翻译的字符串
old="abcdefghijklmnopqrstuvwxyz"
new="defghijklmnopqrstuvwxyzabc"
string.translate(s, string.maketrans(old,new))

string sSrc="fly";
string sTmp="";
char* aStr=sSrc.c_str();
for(int i=0;i<aStr.length();i++)
{
sTmp+=(char)(((int)aStr[i]-94)%26+97);
}
sSrc=sTmp;

#include <stdio.h>
void main()
{

ap0: char c;
while((c=getchar())!='\n')
{
if ((c>='a'&& c<='z') || (c>='A' && c<='Z'))
{
c=c+3;
if (c>='Z'&& c<='Z'+3 || c>='z') c=c-26;
}
printf ("%c",c);
}
printf("\n");
goto ap0;

}
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