第16章 類和標準模板庫
阿新 • • 發佈：2018-12-16
#include <string> #include <vector> struct Review{ std::string title; int rating; } bool FillReview(Review & rr); void ShowReview(const Review &rr); int main(0 { using std::cout; using std::vector; vector<Review> books; Review temp; while {FillReview(temp)) books.push_back(temp); int num=books.size(); if (num>0) { cout<<"Thank you you entered the folling:\n"<<"rating\tbook"; for (int i=0;i<num;i++) showreview(books[i]); cout<<"repring:\n"<<"rating\tbppk\n"; vector<review>::iterator pr; for (pr = books.begin();pr!=books.end();pr++) showreview(*pr); vector<review> oldlist(books); if(num>3) { books.ease(books.begin()+1,books.begin()+3); cout<<"after erasure:\n"; for(pr=books.begin();pr!=books.end();pr++) showreview(*pr); books.insert(books.begin(),oldlist.begin()+1,oldlist.begin()+2); cout<<"after insertion:\n"; for(pr=books.begin();pr!=books.end();pr++) showreview(*pr); } books.swap(oldlist); cout<<"swapping oldlis with books:\n"; for (pr=books.begin();pr!=books.end();pr++) showreview(*pr); } else cout<<"Nothing entered,nothing gained.\n"; return 0; } bool fillreview(review & rr) { std::cout<<"enter book title(quit to quit):"; std::getline(std::cin,rr.title); if(rr.title == "quit") return false; std::cout<<"enter book rating:"; std::cin>>rr.rating; if(!std::cin) return false; while (std:;cin.get()!='\n') continue; return true; } void showreview (const review && rr) { std::cout<<rr.rating<<"\t"<<rr.title<<std:;endl; }
