例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;       }