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Re:为什么这样还不过?In Reply To:Re:为什么这样还不过? Posted by:cpp050800448144 at 2005-04-25 20:06:21 > #include<iostream.h>
> void main()
> {
> double n,k,sum,sum1;
> while(1)
> {
> sum=1,sum1=1;
> cin>>n>>k;
> if(n==0&&k==0)
> break;
> if(k>n/2)
> k=n-k;
> for(double i=1;i<=k;i++)
> {
> sum*=n+1-i;
> sum1*=i;
> }
> sum/=sum1;
> cout<<sum<<endl;
> }
> }
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