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Re:wa 了无数次 郁闷 求高人指点In Reply To:wa 了无数次 郁闷 求高人指点 Posted by:1987 at 2005-03-30 10:49:28 > #include <iostream.h>
> void fun(int,char[]);
> void main()
> {
> char a[7]="0";
> int b;
> while(cin.get(a,7))
> {
> if(cin.get() == '\n')
> return;
> cin>>b;
> fun(b,a);
> while(cin.get() != '\n');
> }
> }
> void fun(int b,char a[7])
> {
> long e;
> int judge;
> long d[150];
> e=0;
> judge=5;
> for(int i=0;i<6;i++)
> {
> if(a[i]!='.')
> e=e*10+(a[i]-'0');
> else
> judge=i;
> }
> judge=5-judge;
> judge*=b;
>
> for(i=0;i<149;i++)
> d[i]=0;
> d[149]=1;
>
> for(i=0;i<b;i++)
> {
> for(int k=149;k>=0;k--)
> d[k]=d[k]*e;
> for(k=149;k>=0;k--)
> {
> if(k>=3)
> {
> d[k-3]+=d[k]/1000;
> d[k]%=1000;
> }
> if(k>=2)
> {
> d[k-2]+=d[k]/100;d[k]%=100;
> }
> if(k>=1)
> d[k-1]+=d[k]/10;
> d[k]%=10;
> }
> }
>
> int m;
> for(i=149;i>=0;i--)
> {
> if(d[i]!=0||judge==0)
> {
> m=i+1;
> break;
> }
> }
> int O=0;
> /* for(int h=0;h<150;h++)
> {
> cout<<"d["<<h<<"]"<<d[h];
> }*/
> for(i=0;i<m;i++)
> {
> if(i==150-judge)
> {
> cout<<'.';
> O=1;
> }
> if(d[i]!=0||O)
> {
> O=1;
> cout<<d[i];
> }
> }
> cout<<endl;
> }
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