Scanner?in?=?new?Scanner(System.in);
try?{
double?treeH?=?Double.parseDouble(in.nextLine());
double?dis?=?0;
int?days?=?0;
while(dis<treeH){
dis+=5;
if(dis>=treeH){
break;
}else{
dis-=2;
}
days++;
}
System.out.println("蝸牛壹***花了:"+days+"天爬到頂。");
}?catch?(Exception?e)?{
System.out.println("請輸入正確的數字");
}
}