每天总费用69.400002，不知道后面2怎么来的
#include <stdio.h>
float sun(int time, int dis){
float sp = 13, p = 2.3, sum = 0;
if(dis<=3){
sum = 13+1;
}else{
if(time>=23 || time<5){
sum = 13+(dis-3)*2.3*1.2+1;
}else{
sum = 13+(dis-3)*2.3+1;
}
}
return sum;
}
int main()
{
float sum = sun(9,12)+sun(18,12);
printf("总费用：%f",sum);
return 0;
}
