零售价列表.cpp

来自「图书馆管理系统 查找」· C++ 代码 · 共 29 行

#include "stdafx.h"
#include"harRange.h"
#include"BookData.h"
void retailTable()
{
	float total=0 ;  //零售价总额
	BookData obj;
	fstream file;
	file.open("shendan.dat",ios::in|ios::binary);
	file.clear();
	if(file.fail())
	{
		cout<<"打开文件失败!\n";
		exit(0);
	}
	cout<<"\n\n\t\t*****下面显示所有的零售价*****\n";
	file.read((char*)&obj,sizeof(obj));
	while(!file.eof())
	{
		cout<<"\t\t书名:"<<obj.getTitle ()<<"  零售价:"<<obj.getRetail()<<"元"<<endl;
		total+=obj.getRetail();
		file.read((char*)&obj,sizeof(obj));
		
	}
	cout<<"\t\t所有图书的零售价总额为:"<<total<<"元"<<endl;
	cout<<"\t\t显示完毕!\n";
	file.seekg(0L,ios::beg);
	file.close();
}