//猴子吃桃问题
#include<stdio.h>
int main(int argc,char const *argv[])
{
int day;
printf("第几天:");
while(1)
{
scanf("%d",&day);
if(day>1)
break;
printf("请重新输入:");
}
int sum=1;
int i;
for(i=1;i<day;i++)
{
sum=(sum+1)*2;
}
printf("第一天一共摘了%d个桃子\n",sum);
return 0;
}
