购买地铁车票使用C语言编程

#include<stdio.h>
int main()
{
int people=0;
int stand=0;
int i;
int a=3;
int b=4;
int c=5;
int price;
printf("输入人数：");
scanf("%d",&people);
for(i=0;i<people;i++)
{
printf("几站？\n");
scanf("%d",&stand);
if(1<=stand&&stand<=4)
price=a;
if(5<=stand&&stand<=9)
price=b;
if(stand>9)
price=c;
printf("应付额为%d\n",price);}

还需要算总额，就是把应付额都加起来