#include <iostream>

using namespace std;

void p(double ss,int n)
{
	int point,i,s,l;
	if (ss<10) 
	{
		point=4;
		s=ss*10000;
	}
	else
	{
		point=3;
		s=ss*1000;
	}

	int a[200]={0},c,d;
	a[0]=s%10;
	a[1]=(s/10)%10;
	a[2]=(s/100)%10;
	a[3]=(s/1000)%10;
	a[4]=(s/10000)%10;
	if (n!=1)
	{
	for (int j=2;j<=n;j++)
	{
		d=0;
		for (i=0;i<=199;i++)
		{
			c=a[i]*s+d;
			a[i]=c%10;
			d=c/10;
		}
	}
	}
	point=point*n;
	for (i=199;i>=0;i--)
	{
		if (a[i]!=0) break;
	}
	for (int j=0;j<=199;j++)
	{
		if (a[j]!=0) break;
	}
	if (point<=j)
	{
		for (int l=i;l>=point;l--)
			cout<<a[l];
		cout<<endl;return;
	}
	if (point>i)
	{
		cout<<'.';
		for (l=point-1;l>=j;l--)
			cout<<a[l];
		cout<<endl;
		return;
	}
	for (l=i;l>=point;l--)
		cout<<a[l];
	cout<<'.';
	for (l=point-1;l>=j;l--)
		cout<<a[l];
	cout<<endl;
	return;
}

int main()
{
	int n; 
	double ss;
	while(cin>>ss>>n)
	{
		if (ss==0.0)
		{
			cout<<0<<endl;
			continue;
		}
		p(ss,n);
	}
	return 0;
}

• Re:帮我看看哪错了，我能想到的数据都过了啊！！ (1209) flag 2006-12-02 10:19:43