#include<stdio.h>
int main()
{ int c,s;
float p,w,d,f;
scanf("%f,%f,%d",&p,&w,&s);
if(s>=3000)c=12;
else c=s/250;
if(c==12)d=15;
else if (8<c<=11) d=10;
else if (3<c<=8) d=8;
else if (1<c<=3) d=5;
else if (c=1) d=2;
else if (c=0) d=0;
f=p*w*s*(1-d/100.0);
printf("freight=%15.4f",f);
getchar();
return 0;
}
。话说我第二行的int改为void 删掉return 0 也会报错是为什么?