最后输出的结果为什么出错。

Question

#include
int main(void)
{
float distance , fare;
int scheme;
printf("输入公里数（单位：公里）：");
scanf("%f",&distance);
if (distance <= 2){
scheme = 1;
}
else if(distance <= 10){
scheme = 2;
}
else if(distance <= 100){
scheme = 3;
}
else {
scheme = 4;
}
switch (scheme)
{
case 1: fare = 7.0;
case 2: fare = 7.0 + ((distance - 2.0) * 1.8);
case 3: fare = 21.4 + ((distance - 10.0) * 2.1);
case 4: fare = 210.4 + ((distance - 100.0) * 3.0);
}
printf("你需要支付的车费为%f元",fare);
return 0;
}

Answer 1

case 1: fare = 7.0; break;
case 2: fare = 7.0 + ((distance - 2.0) * 1.8); break;
case 3: fare = 21.4 + ((distance - 10.0) * 2.1); break;
case 4: fare = 210.4 + ((distance - 100.0) * 3.0); break;