#include <stdio.h> (30951)#include<math.h> int main() { float kg = 0.0; char ch = 0; int price = 20; scanf("%f %c", &kg, &ch); //输入kg 是否需要加急 if (kg >= 1 && ch == 'y') { price += (ceil(kg) * 1 - 1) + 5; // -1是减去默认的 } else if (kg >= 1 && ch == 'n') price += ceil(kg) - 1; else if (kg < 1 && ch == 'y') price += ceil(kg) - 1 + 5; printf("%d", price); return 0; }