西工大POJ100题(全新)(9)

if(l<=60)l=10*0.1+10*0.075+20*0.05+(l-40)*0.03; else

if(l<=100)l=10*0.1+10*0.075+20*0.05+20*0.03+(l-60)*0.015;

else

l=10*0.1+10*0.075+20*0.05+20*0.03+40*0.015+(l-100)*0.01;

printf("%.6f",l);

return 0;

}

7·出租车费

#include<stdio.h>

#include<math.h>

int main()

{

float a,n,t;

scanf("%f",&a);

if (a<=2) n=7;

else if (a<=15) {

t=a-floor(a);

if(t==0)n=7+(floor(a)-2)*1.5;