汽水瓶:C语言解法

利用递归的思想去循环兑换汽水

#include<stdio.h>
int conversion(int bottle){
    if(bottle == 1){
        return 0;
    }else if(bottle == 2){//从老板那借一瓶
        return 1;
    }else{
        return bottle/3+conversion(bottle/3+bottle%3);
    }
}
int main(){
    int bottle = 0;
    while(~scanf("%d\n",&bottle)){
        if(bottle == 0) continue;
        printf("%d\n",conversion(bottle));
    }
}