运输公司计算运费

    #include "stdio.h"
    void main()
    {
        int s,c;
    float d=0,p,w,f;

    scanf("%f,%f,%d",&p,&w,&s);
    if(s>=3000)
    {c=12;}
    else
    {c=s/250;}
    switch(c)
    {
    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=p*w*s*(1-d/100.0);
    printf("总运费为：");
    printf("f=%f",f);
    }