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  1. #include <iostream>
  2. #include <map>
  3.  
  4. using namespace std;
  5.  
  6. void print(map<int,int>& s)
  7. {
  8.     cout << "\nmp = {";
  9.     for(auto p = s.begin(); p!= s.end();)
  10.         cout << p->first << "->" << p->second << ",}"[++p==s.end()];
  11. }
  12.  
  13. void print(multimap<int,int>& s)
  14. {
  15.     cout << "\nmmp = {";
  16.     for(auto p = s.begin(); p!= s.end();)
  17.         cout << p->first << "->" << p->second << ",}"[++p==s.end()];
  18. }
  19.  
  20. int main()
  21. {
  22.     map<int,int> s;
  23.     s[1]=1, s[2]=4, s[3]=9, s[4]=16, s[5]=25, s[6]=36, s[7]=49;
  24.     print(s);
  25.     map<int,int> s2 = {{1,11},{2,12},{3,13}};
  26.     print(s2);
  27.     s.erase(3);
  28.     print(s);
  29.     map<int,int>::iterator ix = s.find(4);
  30.     s.erase(ix);
  31.     print(s);
  32.     s.erase(s.find(5), s.find(9));
  33.     print(s);
  34.     cout << "\nCount of 1: " << s.count(1);
  35.     cout << "\nCount of 2: " << s.count(2);
  36.     print(s);
  37.  
  38.     auto it = s.lower_bound(5);
  39.     cout << "\nThe lower bound of 5 is " << it->first << ".";
  40.  
  41.     auto it_pair  = s.equal_range(1);
  42.     cout << "\nThe bounds of 1 are " << it_pair.first->first << " and " << it_pair.second->first << ".";
  43.  
  44. 	multimap<int,int> ms;
  45.     ms.insert({1,1});
  46.     ms.insert({2,4});
  47.     ms.insert({2,9});
  48.     ms.insert({2,16});
  49.     ms.insert({5,25});
  50. 	print(ms);
  51.  
  52. 	it_pair = ms.equal_range(2);
  53.     ms.erase(it_pair.first, it_pair.second);
  54.     print(ms);
  55. }
Success #stdin #stdout 0s 15240KB
comments (?)
stdin 
Standard input is empty
stdout 
mp = {1->1,2->4,3->9,4->16,5->25,6->36,7->49}
mp = {1->11,2->12,3->13}
mp = {1->1,2->4,4->16,5->25,6->36,7->49}
mp = {1->1,2->4,5->25,6->36,7->49}
mp = {1->1,2->4}
Count of 1: 1
Count of 2: 1
mp = {1->1,2->4}
The lower bound of 5 is 2.
The bounds of 1 are 1 and 2.
mmp = {1->1,2->4,2->9,2->16,5->25}
mmp = {1->1,5->25}
https://ideone.com/xigSak
language:
C++14 (clang 8.0)
created:
6 years ago
visibility:
public

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