作业3.6

#include<stdio.h>
int main(void)
{
 int choice,i;
 double price;
 for(i=1;i<=5;i++){
  printf("[1]Select apples\n");
  printf("[2]Select pears\n");
  printf("[3]Select oranges\n");
  printf("[4]Select grapes\n");
  printf("[0]Select exit\n");
  printf("Enter choice:");
  scanf("%d",&choice);
  if(choice==0)
   break;
  switch(choice){
  case 1:price=3.00;break;
  case 2:price=2.50;break;
  case 3:price=4.10;break;
  case 4:price=10.20;break;
  default:price=0.00;break;
  }
  printf("price=%0.2f\n",price);
 }
 return 0;
}