#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void GetltemName(char *item, FILE *file);
int  GetltemPrice(FILE *file);
void AcceptMoney(int price);
//symbolic constant definitions
#define CAPACITY 10  //max number itemavailable to vend
int main(void)
{
char name[CAPACITY][20]={0};
int price[CAPACITY]={0};
FILE *stockfile;
int i,Nitems,choice;
int listend;
stockfile=fopen("","r");
if(stockfile==NULL)
{
  printf("Error initialising not opened");
}
else
{
  //read stock from file
  listend=0;
  Nitems=0;
  do
  {
  price[Nitems]=GetltemPrice(stockfile);
  GetltemName(name[Nitems],stockfile);
  if(price[Nitems]>0)
  {
    Nitems++;
  }
  else
  {
    listend=1;
  }
  }
  while(Nitems<CAPACITY&&!listend);
  //print menu
  printf("***Menu***\n");
  for(i=0;i<Nitems;i++)
  {
  printf("\n%d:%20s:%dp",i,name[i],price[i]);
  }
  //request selection
  printf("\n\n");
  do
  {
  printf("Please make your chioce(enter CTRL-C to quit);");
  scanf("%d",&choice);
                       
  }
  while(choice<0||choice>Nitems-1);
  printf("%s seleted.\n",name[choice]);
 
  AcceptMoney(price[choice]);
  printf("\nEnjoy your %s.\n",name[choice]);
}
fclose(stockfile);
return 0;
}
void GetltemName(char *item,FILE *file)
{
int len;
if(feof(file))
{
  item[0]='\0';
}
else
{
  fgets(item,20,file);
  len=strlen(item);
  if(item[len-1]=='\n')
  {
  item[len-1]='\0';
  }
}
}
void AcceptMoney(int price)
{
    int money=0,coin,left;
    printf("Please pay %d p. 10p,5p,2p,1p accepted. No change given.\n\n",price);贪吃蛇的编程代码
   
    do
    {
      left=price;
      printf("Price: %d, paid: %d, to pay: %d,",price,money,left);
      do
      {
      printf("please enter coin:\n");
      scanf("%d",&coin);
      }
      while(coin!=1&&coin!=2&&coin!=5&&coin!=10);
      money=money+coin;
    left=price-money;
    }
    while(left>0);
    printf("%d p paid. Thank you.",money);
}
int GetltemPrice(FILE *file)
{  int j;
   
if(feof(file))
{
  j='\0';
}
else
{
  fscanf(file,"%d",&j);
}
return j;
}
     
   
COMMODITY FILE  : 
40Mars Bar
40Toffee Crisp
30Kit Kat
25Toblerone
40bounty
50Topic
0
     

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。