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有人解释下我的程序为什么对吗?莫名其妙地过了...
char n[10]
gets(n)
r=0 //结果
len=strlen(n)
for(i=0;i<len;i++)
{
p=n[i]-'0';
if(p>4) p--;
r += r*8+p;
}
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