#include?<stdio.h>

#define?start?13

float?Price(float?distance,int?hour){
????if(hour>24||hour<0){
????????printf("{%s}","數(shù)據(jù)有誤");
????????return?0;
????}
????float?price?=?2.3;
????if?(hour>=23||hour<5){
????????price*=1.2;
????}
????distance?=?(distance-3)>0?distance-3:0;
????return?distance*price+1+start;
}

int?main()
{
????printf("上午：%.2f\n下午：%.2f",Price(4,23),?Price(2,18));
????return?0;
}