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help!!为什么都是WA!#include <stdio.h>
#define M 125
void main()
{
int R[M];
float r1;
int r,n,i,l=0;
int f;//要打印的小数长度;
int a;//要打印的整数长度;
//
while(scanf("%f %d",&r1,&n)!=EOF)
{
i=125; //
while(--i) R[i]=0;
if(10.00<=r1&&r1<99.999) f=3*n,a=2*n,r=r1*1000+0.5;
else if(2.0<=r1&&r1<10.0) f=4*n,a=n,r=r1*10000+0.5;
else if(1.0<=r1&&r1<2.0) f=4*n,a=1,r=r1*10000+0.5;
else a=0,f=4*n,r=r1*10000+0.5;
//////////////////////
/////////////////////////
R[0]=r%10;
R[1]=(r%100)/10;
R[2]=(r%1000)/100;
R[3]=(r%10000)/1000;
R[4]=(r%100000)/10000;
//////////////////////////
while(--n)
{
for(i=0;i<M;i++)
R[i]*=r;
//
for(l=0;l<M-2;l++){
R[l+1]+=R[l]/10;
R[l]%=10;
}
}
//if(a==0){
for(i=f+a;i>=f;i--)
if(R[i]!=0) break;
for(;i>=f;i--)
printf("%d",R[i]);
for(r=0;r<f;r++)
if(R[r]!=0) break;
if(r!=f) printf("%c",'.');
for(;i>=r;i--)
printf("%d",R[i]);
// }
// else if()
printf("%c",'\n');
}
}
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