课程设计-C++商店收银系统(控制台).rar

#include"Product.h" #include"all.h" //Product赋值 void Product::Setdata(int idl, char* namel, int pricel, int numberl) { id = idl; strcpy_s(name, namel); price = pricel; number = numberl; } //商品入库 void Product::input() { cout << "编号:"; cin >> id; ifstream infile("Goods.dat", ios::in | ios::binary); //判断商品是否已存在 if (!infile) { d_show(); exit; } while (infile) { int n; infile.read((char*)& p, sizeof(p)); n = infile.gcount(); if (n == sizeof(p)) if (p.id == id) { cout << "货物已存在，请核实后再输入!" << endl; return; } } infile.close(); cout << "商品名:"; cin >> Goodsname; cout << "单价:"; cin >> price; cout << "数量:"; cin >> number; p.Setdata(id, Goodsname, price, number); ofstream outfile("Goods.dat", ios::app | ios::binary); if (!outfile) { d_show(); exit; } outfile.write((char*)& p, sizeof(p)); outfile.close(); b_show(); } //显示所有商品 void Product::all() { ifstream infile("Goods.dat", ios::in | ios::binary); if (!infile) { //如果打开文件失败，则创建文件 ofstream outfile("Goods.dat", ios::binary); outfile.close(); } cout << "编号\t" << "名字\t" << "单价\t" << "数量\t" << endl; while (infile) { int n; infile.read((char*)& p, sizeof(p)); n = infile.gcount();//获取长度 if (n == sizeof(p)) p.Showl(); } infile.close(); } //普通结账 void Product::count() { int s = 0, S = 0, k; cout << "结束输入按“0”" << endl; do { cout << "商品编号:"; cin >> i; cout << "购买数量:"; cin >> j; b_show(); ifstream infile("Goods.dat", ios::in | ios::binary); if (!infile) { d_show(); exit; } while (infile) { int n; infile.read((char*)& p, sizeof(p)); n = infile.gcount(); if (n == sizeof(p)) if (p.id == i) { p.Show(j); b_show(); s = p.price * j; //导入单价和购买数量，进行结算 S = S + s; break; } } infile.close(); } while (i != 0); cout << "金额:" << S << endl; cout << "收款:"; cin >> k; cout << "找零:" << k - S << endl; if (S > 300) { //消费超过300，办理会员 cout << "消费已超过200，可办理会员，“y/n”" << endl; char l; cin >> l; if (l = 'y') v.addVIP(); } b_show(); } //会员结账 void Product::vip_count() { int s = 0, S = 0, k; cout << "结束输入按“0”" << endl; do { cout << "商品编号:"; cin >> i; cout << "购买数量:"; cin >> j; ifstream infile("Goods.dat", ios::in | ios::binary); if (!infile) { d_show(); exit; } while (infile) { int n; infile.read((char*)& p, sizeof(p)); n = infile.gcount(); if (n == sizeof(p)) if (p.id == i) { p.Show(j); b_show(); s = p.price * j; //导入单价和购买数量，进行结算 S = S + s; r.viprecord(); break; } } infile.close(); } while (i != 0); cout << "金额:" << S << endl; cout << "会员价:" << S * 0.9 << endl; cout << "收款:"; cin >> k; cout << "找零:" << k - (S * 0.9) << endl; b_show(); } // 商品显示 void Product::Show(int j) { cout << "编号\t" << "名字\t" << "单价\t" << "余量\t" << endl << id << "\t" << name << "\t" << price << "\t" << number - j << endl; }