www.gusucode.com > VC++ 模拟超市POS机-源码程序 > VC++ 模拟超市POS机-源码程序/code/POS机/StoreBase.cpp
//Download by http://www.NewXing.com // StoreBase.cpp: implementation of the StoreBase class. // ////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "StoreBase.h" #include <string.h> #define MAX_SIZE 1000 ////////////////////////////////////////////////////////////////////// // Construction/Destruction ////////////////////////////////////////////////////////////////////// StoreBase::StoreBase() { } StoreBase::~StoreBase() { } bool StoreBase::open(char* filename,char* charity) { fp=fopen(filename,charity); if(fp == NULL) { return false; } else { return true; } } void StoreBase::close() { if(fp != NULL) { fclose(fp); } } bool StoreBase::check(char* pid) { int i; fseek(fp,0,2); int end = ftell(fp); fseek(fp,0,0); int size = end / sizeof(Product); Product pro[MAX_SIZE]; for(i=0; i < size; i++) { fread(&pro[i], sizeof(Product),1,fp); } for(i=0;i<size;i++) { if(strcmp(pid, pro[i].getId())==0) { pro[i].display(); return true; } } return false; } void StoreBase::list() { int i; fseek(fp,0,2); int end = ftell(fp); fseek(fp,0,0); int size = end / sizeof(Product); Product pro[MAX_SIZE]; for(i=0; i < size; i++) { fread(&pro[i], sizeof(Product),1,fp); } for(i=0;i<size;i++) { pro[i].display(); } } void StoreBase::add(Product &p) { fwrite(&p, sizeof(Product), 1, fp); }