第1页共10页编号:时间:2021年x月x日书山有路勤为径,学海无涯苦作舟页码:第1页共10页#include#includeusingnamespacestd;constintm=100;//定义常量mclassStore//定义类{private:intnum;//编号charname[20];//名称doubleprice;//价格intquantity;//数量intamount;//数目public:voidInput();intInput_2();voidDig();voidChange();voidSearch_num();voidSearch_name();voidShow();voidShort();voidDelete();}goods[m];voidStore::Input()//创建表单{inti,n;cout<<"请输入货物总数:";cin>>amount;cout<>goods[i].name;cout<<"单价:";cin>>goods[i].price;cout<<"库存量:";cin>>goods[i].quantity;cout<(&(goods[n])),sizeof(Store));//导出文件}os.close();//关闭文件}intStore::Input_2()//文件读入{inti,n;ifstreamis("goods.txt",ios_base::in|ios_base::binary);if(!is){cout<<"打开失败"<(goods+i),sizeof(Store));i++)amount=i;cout<<"导入的表单:"<>n;cout<>goods[amount+i].name;cout<<"单价:";cin>>goods[amount+i].price;cout<<"库存量:";cin>>goods[amount+i].quantity;}cout<<"\n输入的信息"<(&(goods[m])),sizeof(Store));//导出文件}os.close();//关闭文件};voidStore::Change()//修改信息{intn,i,m;cout<<"要修改第几个货物的信息(输入货号):";cin>>n;cout<>goods[n-1].name;cout<<"单价:";cin>>goods[n-1].price;cout<<"库存量:";cin>>goods[n-1].quantity;cout<(&(goods[m])),sizeof(Store));//导出文件}os.close();//关闭文件}voidStore::Search_num()//按编号查{intn;cout<<"请输入货号:";do{cin>>n;cout<