递归实现倒序打印

//递归实现倒序打印
#include <stdio.h>
#define LEN 3

char buf[LEN]={'a', 'b', 'c'};

void print_backward(int pos)
{
     if(pos == LEN)
      return;
     print_backward(pos+1);
     putchar(buf[pos]);
}

int main(void)
{
     print_backward(0);
     putchar('\n');

     return 0;
}