C 實現 移位加密

/*

filename: encrypt_string.cs

author: zhanghua

date: 2005-08-11

fuction : input a strig and encrypt a string

加密後的字串的第乙個字元是原先字串的最後乙個字元，

其餘的每乙個字元是對應的原字串中的前乙個字元的值加

上3。example： welcome -> ezhofrp

*/using system;

class test

/n", strinput);

//encrypt(strinput);

stroutput = encrypt(strinput);

console.writeline("stroutput is :/n", stroutput);

}private static string encrypt(string strinput)

/n", len);

strfont = strinput.remove(len-1,1);

strend= strinput.remove(0, len-1);

" strfont is : /n" , strfont);

" strend is : /n" , strend);

charfont = strfont.tochararray();

for(i=0; i/n", intfont);

charfont[i]= convert.tochar(intfont);

"charfont is : /n", i, charfont[i]);

}strfont = ""; //let strfont null

for (i=0; istroutput=strend + strfont;

return stroutput;}}

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