C++primer 11.2.3 sessions

Exercise 11.12

1#include <iostream>2#include <string>3#include <iostream>4#include <vector>5#include <algorithm>6#include <list>7#include <functional>8#include <iterator>9#include <map>Ten#include <Set> One#include <utility> A using namespacestd; - using namespaceplaceholders; -  the intMain () - { -vector<pair<string,int>>PA; -     stringstr; +     intnum; -pair<string,int>anon; +      while(Cin >> STR >>num) A     { atAnon.first =str; -Anon.second =num; - Pa.push_back (anon); -     } -      for(auto C:pa) -     { incout << C.first <<" "<< C.second <<Endl; -     } toSystem"Pause"); +     return 0; -}

Exercise 11.13

1#include <iostream>2#include <string>3#include <iostream>4#include <vector>5#include <algorithm>6#include <list>7#include <functional>8#include <iterator>9#include <map>Ten#include <Set> One#include <utility> A using namespacestd; - using namespaceplaceholders; -  the intMain () - { -vector<pair<string,int>>PA; -     stringstr; +     intnum; -pair<string,int>anon; +      while(Cin >> STR >>num) A     { at         //anon.first = str; -         //anon.second = num; -         //anon = pair<string, int> (str, num); -Anon =make_pair (str, num); - Pa.push_back (anon); -     } in      for(auto C:pa) -     { tocout << C.first <<" "<< C.second <<Endl; +     } -System"Pause"); the     return 0; *}

Each has its advantages, the first is the simplest and the other is more concise;

Exercise 11.14

1#include <iostream>2#include <cctype>3#include <string>4#include <iostream>5#include <string>6#include <vector>7#include <algorithm>8#include <list>9#include <functional>Ten#include <iterator> One#include <fstream> A#include <map> -#include <Set> -#include <utility> the using namespacestd; - using namespaceplaceholders; -  -  +  - intMain () + { A     stringstr, STR1,STR2; at     intnum; -map<string, vector<string>> family{{"Joyce",{"haha","hehe"} },{"James",{"Heihei","Tom","Jerry" } } }; -vector<pair<string,int>>Brith; -pair<string,int>BR; -      for(auto c:family) -     { incout <<"member is:"<<Endl; -          for(Auto it = C.second.begin (); It! = C.second.end (); + +it) tocout << *it <<"."<< C.first <<Endl; +cout <<Endl; -     } the  *      while(Cin >> str >> str1 >>num) $     {Panax Notoginseng Family[str].push_back (str1); -BR =make_pair (str, num); the Brith.push_back (BR); +     } A  the      for(auto c:family) +     { -cout <<"member is:"<<Endl; $          for(Auto it = C.second.begin (); It! = C.second.end (); + +it) $cout << *it <<"."<< C.first <<Endl; -cout <<Endl; -     } the  -      for(auto C:brith)Wuyi     { thecout << C.first <<" "<< C.second <<Endl; -     } WuSystem"Pause"); -     return 0; About}

C++primer 11.2.3 sessions