C + + URL Encode/decode (gb2312)

    Char Dec2hexchar (short int n) {if (0 <= n && n <= 9) {return char          (' 0 ') + N);          } else if (<= n && n <=) {return char (short (' A ') + n-10);          } else {return char (0); }}} short int hexchar2dec (char c) {if (' 0 ' <=c && c<= ' 9 ') {RET          Urn Short (c ' 0 ');          } else if (' a ' <=c && c<= ' F ') {return (short (c ' a ') + 10);          } else if (' A ' <=c && c<= ' F ') {return (short (c ' a ') + 10);          } else {return-1;          }} string Encodeurl (const string &url) {string strresult = "";              for (unsigned int i=0; i<url.size (); i++) {char c = url[i];                  if (' 0 ' <=c && c<= ' 9 ') | | (' A ' <=c && c< = ' Z ') | |                  (' A ' <=c && c<= ' Z ') | | c== '/' | |                  c== '. '              ) {strresult + = C;                  } else {int j = (short int) C;                  if (J < 0) {j + = 256;                  } int i1, i0;                  I1 = J/16;                  I0 = j-i1*16;                  strresult + = '% ';                  Strresult + = Dec2hexchar (I1);              Strresult + = Dec2hexchar (I0);      }} return strresult;          } std::string decodeurl (const std::string &url) {string result = "";              for (unsigned int i=0; i<url.size (); i++) {char c = url[i];              if (c! = '% ') {result + = C;        } else {char C1 = url[++i];          char c0 = url[++i];                  int num = 0;                  num + = HEXCHAR2DEC (C1) * + HEXCHAR2DEC (C0);              Result + = char (num);      }} return result;   }

C + + URL Encode/decode (gb2312)