8_7.cpp

来自「C程序参考,简单易懂,是初学者不可少的参考资料」· C++ 代码 · 共 11 行

#include<stdio.h>
int taozi(int n)
{  int k;
   if (n==1) k=1;
   else k=2*taozi(n-1)+1;
   return(k);
}
main()
{
 printf("The number of taozi is %d",taozi(5));
          }