C++Primer中文版(第四版)题解整理(9)

C++Primer题解

Sales_itembook;

system("CLS");

cout<<"Entertransactions:"<<endl;

while(cin>>book){

//输出ISBN，售出书的本数，总收入，平均价格

cout<<"ISBN,numberofcopiessold,"<<"totalrevenue,andaveragepriceare:"<<endl;

cout<<book<<endl;

}

return0;

}

习题1.22

编写程序，读入两个具有相同ISBN的Sales_item对象并产生它们的和。#include<iostream>

#include"Sales_item.h"

#include"windows.h"

usingnamespacestd;

intmain()

{

Sales_itemtrans1,trans2;

//读入交易

system("CLS");

cout<<"Entertwotransactions:"<<endl;

cin>>trans1>>trans2;

if(trans1.same_isbn(trans2))

cout<<"Thetotalinformation:"<<endl

<<"ISBN,numberofcopiessold,"

<<"totalrevenue,andaveragepriceare:"

<<endl<<trans1+trans2;

else

cout<<"ThetwotransactionshavedifferentISBN."<<endl;

return0;

}

习题1.23

编写程序，读入几个具有相同ISBN的交易，输出所有读入交易的和。#include<iostream>

#include"Sales_item.h"