1836883_ac_0ms_32k.c

北大大牛代码 1240道题的原代码 超级权威

#include <stdio.h>

double c(double n,double m)
{
 double i,s;
 s=1;
 if (n >= m - n) { n = m - n; }
 for (i = m; i >= m-n+1; i--)
   s *= i / (i - (m - n));
 return s;
}
void main()
{
 double x,y,z;
 scanf("%lf %lf",&x,&y);
 while (x || y)
 {
  z = c(y,x);
  printf("%.0lf\n",z);
  scanf("%lf %lf",&x,&y);
 }
}