第三章3-8

#include<stdio.h>
int main(void)
{
 int choice,i;
 double price;

 for(i=1;i<=5;i++){

  printf("[1]Select crisps\n");
  printf("[2]Select popcorn\n");
  printf("[3]Select chocolate\n");
  printf("[4]Select cola\n");
  printf("[0]exit\n");

  printf("Enter choice:");
  scanf("%d",&choice);

  if(choice==0)
   break;

  switch(choice){
      case 1:price=3.0;break;
   case 2:price=2.5;break;
   case 3:price=4.0;break;
   case 4:price=3.5;break;
   default:price=0.0;break;
  }

  printf("price=%0.1f\n",price);
 }
     printf("Thanks\n");

  return 0;
}