4.8 选择结构程序综合举例 例4.10

#include<stdio.h>

int main()

{

int c,s;

float p,w,d,f;

printf(“please enter price ,weight,discount:”);

scanf("%f,%f,%d",&p,&w,&s);

if(s>=3000) c=12;

else

c=s/250;

switch©

{

case 0:d=0;break;

case 1:d=2;break;

case 2:

case 3:d=5:break;

case 4:

case 5:

case 6:

case 7:d=8;break;

case 8:

case 9:

case 10:

case 11:d=10;break;

case 12:d=15;break;

}

f=pws*(1-d/100);

printf(“freight=%10.2f\n”,f);

return 0;

}