C 面向对象程序设计教程[第3版]--陈维兴,林小茶课后习题答案解析

WORD格式.分享

if(str[i] != 0 && (str[i] < 'A')) {

str[i] += ('A' - 'a'); } }

fstream out(\, ios::app); if(!out) {

cout << \打开文件file2.txt失败！\\n\; abort(); }

out >> str; in.close(); out.close(); return 0; }

7.15 不会。

#include #include \ #include \ using namespace std;

class order {

private:

int orderID; int buyerID; int listcount;

string orderlist[20]; static int ordercount; public:

order(buyer &person, book &b[], int bookNumber) {

ordercount++;

orderID = ordercount; buyerID = person.buyerID; listcount = bookNumber;

for(int i = 0; i < bookNumber; i++) orderlist[i] = b[i].book_ID; }

精品.资料

WORD格式.分享

void show() {

cout << \订单编号： \ << orderID << \购书人编号： \ << buyerID << \购书数量： \ << listcount << endl; for(int i = 0; i < listcount; i++)

cout << \书号： \ << orderlist[i] << endl;; } };

int order::ordercount = 0;

int main() {

book *c[20];

book c1(\, \程序设计\, \谭浩强\, \清华\, 25); book c2(\, \程序设计\, \谭浩强\, \清华\, 28);

c[1] = &c1; c[2] = &c2;

layfolk b1(\林晓茶\, 1, \北京\, 0); order ord(b1, c, 2); order.show(); return 0; }

精品.资料