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为什么还是wrong answer?

Posted by geniusxsy at 2003-12-15 17:49:14 on Problem 1001
难道fun部分有问题?我下午在UNIX上调过的,现在凭记忆写出来(只把原来int b[150]改为short了),难道写错了?不会啊!大家帮忙看一下,谢谢!

void fun(float a,int n)
{ long al,temp1,temp2;
 short b[150]={0};       /*存放结果的数组*/
 int i,j,k=0;
 short *p;p=b;
    while(a!=(float)((int)a))  /*把a转为long型,存为al,并求小数位数k*/
 {a*=10;k++;
 }
 k=k*n;     /*n次方的小数位数*/
 al=(int)a;                     
 b[149]=1;    
 for(i=0;i<n;i++)
 { temp2=0;
    for(j=149;j>=0;j--)
      { temp1=b[j]*al+temp2;   /*求某位数乘以al后再加后一位进位进上来的数*/
        b[j]=temp1%10;         
        temp2=temp1/10;        /*往前进位的数*/
       }
  }
  while(*p==0&&p<b+149-k) p++;  /*处理掉前面多余的0*/
  for(;p<b+150-k;p++)
  printf("%d",*p);
  printf(".");
  for(;p<b+150;p++)
  printf("%d",*p);
}

main()
{float a;int n; 
  while(scanf("%f%d",&a,&n)==2)
  { fun(a,n);}
}
 

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