#include<stdio.h>
main()
{
     double sum;
     unsigned long i,k,n;
     scanf("%ld %ld",&n,&k);
     while(n!=0)
     {  
         if(k>n/2) k=n-k;
         sum=n/k; 

         for(i=1;i<k;i++)
          { sum=sum/(k-i);
            sum=sum*(n-i);
          } 

         printf("%.0f\n",sum);
         scanf("%ld %ld",&n,&k);       
     }
}

• Re:帮忙看看我这程序吧～～～哪儿有问题啊～～大虾帮忙 (340) keeng2008 2008-04-01 21:24:39
• Re:帮忙看看我这程序吧～～～哪儿有问题啊～～大虾帮忙 (425) xueshanhaizi 2008-06-12 19:27:17