url解码问题

[sjchao]

http://www.zangtianshuo.com.cn/mp3/pengchuzij/%e8%87%a7%e5%a4%a9%e6%9c%94%ef%bc%8d%e8%87%a7%e5%a4%a9%e6%9c%94%ef%bc%8d%e8%80%81%e7%8e%89%e7%b1%b3.mp3

用url解码无法将上面这个下载链接正确解码，解出一对乱码。
但是把链接复制到IE，回车后能正确解码，（快车和迅雷都做不到）。
哪位大侠可以给出解码方法？

[pp616]

void DeCode(char *word)
{
int i,j;
for(i = 0, j = 0; i < strlen(word); i++) {
if(word[i] == '%') {
if(word[i+1] >= 'a' && word[i+1] <= 'f') word[j] = word[i+1] - 'a' + 10;
else if(word[i+1] >= 'A' && word[i+1] <= 'F') word[j] = word[i+1] - 'A' + 10;
else if(word[i+1] >= '0' && word[i+1] <= '9') word[j] = word[i+1] - '0';
else {
word[j] = '%';
word[j+1] = word[i+1];
j += 2;
i++;
continue;
}
word[j] *= 16;
if(word[i+2] >= 'a' && word[i+2] <= 'f') word[j] += word[i+2] - 'a' + 10;
else if(word[i+2] >= 'A' && word[i+2] <= 'F') word[j] += word[i+2] - 'A' + 10;
else if(word[i+2] >= '0' && word[i+2] <= '9') word[j] += word[i+2] - '0';
else {
word[j] = '%';
word[j+1] = word[i+1];
word[j+2] = word[i+2];
j += 3;
i += 2;
continue;
}
j++;
i += 2;
} else {
word[j++] = word[i];
}
}
word[j] = 0;
}

这是以前用过的一个解码程序。应该是好的.

[柯本]

简单地(用fastnet的TNMURL及UTF8Decode):
NMURL1->InputString="http://www.zangtianshuo.com.cn/mp3/pengchuzij/%e8%87%a7%e5%a4%a9%e6%9c%94%ef%bc%8d%e8%87%a7%e5%a4%a9%e6%9c%94%ef%bc%8d%e8%80%81%e7%8e%89%e7%b1%b3.mp3";
String x=NMURL1->Decode;
x=UTF8Decode(x);
Edit1->Text=x;
------结果为---------------------------
http://www.zangtianshuo.com.cn/mp3/pengchuzij/臧天朔－臧天朔－老玉米.mp3