#include <stdio.h>
#include <stdlib.h>
void mul(char [],int ,char [],int);
int main()
{
	char in[6]={0};
	char r[100]={0};
	unsigned int np;
	while(EOF!=scanf("%s%d",in,&np))
	{
		int i=5;
		while(in[i]!='.')i--;
	
		int lp = 5 - i;
		while(i>=1)
		{
			in[i] = in[i-1];
			i--;
		}	
		in[i]=48;

		r[99] = in[5] = in[5]-0x30;
		r[98] = in[4] = in[4]-0x30;
		r[97] = in[3] = in[3]-0x30;
		r[96] = in[2] = in[2]-0x30;
		r[95] = in[1] = in[1]-0x30;
		r[94] = in[0] = in[0]-0x30;
		if(np>1)
		{
			int l;
			for(l=2;l<=np;l++)
			{
				mul(r,100,in,6);
			}
		}
		
		i=0;
		while(r[i]==0 && i<=99-np*lp)i++;
		for(;i<=99-np*lp;i++)
		{
			printf("%d",r[i]);
		}
		if(i<99)
		{
			printf(".");
			int j=99;
			while(r[j]==0)j--;
			while(i<=j)
			{
				printf("%d",r[i]);
				i++;
			}
		}
		printf("\n");
		//memset(in,0,sizeof(char)*6);
		//memset(r,0,sizeof(char)*100);
		for(i=0;i<=5;i++)in[i]=0;
		for(i=0;i<=99;i++)r[i]=0;
	}
	return 0;
}

void mul(char r[],int rl,char i[],int il)
{
	int c,a;
	c = 0;
	//char *m;
	//m = (char *)malloc(rl*sizeof(char));
	//memset(m,0,rl*sizeof(char));
	char m[100]={0};

	for(int j=il-1,ii=0;j>=0;j--,ii++)
	{
		for(int l=rl-1;l>=0;l--)
		{
			a = i[j] * r[l];
			c = a/10;
			a = a%10;
			if(l-ii>=0)
			{
				a+=m[l-ii];
				m[l-ii]=a%10;
			}
			c+=a/10;
			if(l-ii!=0)m[l-ii-1]+=c;
			c=0;
		}
	}
	//memcpy(r,m,rl);
	char x;
	for(int l=0;l<=99;l++)
	{
		x = m[l];
		r[l]=x;
	}
	//free(m);
}

在自己的机器上运行结果是真确的啊？

• Re:谁能帮我看看，怎么老是是Runtime Error啊，谢谢了 (32) wrong123 2006-01-02 17:00:14
  • Re:谁能帮我看看，怎么老是是Runtime Error啊，谢谢了 (49) hefei2 2006-01-02 22:40:37