fork(1) download
copy 
  1. #include <map>
  2. #include <iostream>
  3.  
  4.  
  5. int main(){
  6.   std::map<int, int> test;
  7.   std::cout << "size" << test.size() << std::endl;
  8.  
  9.   std::cout << test[0] << std::endl;
  10.  
  11.   //container size increased by 1  
  12.   std::cout << "size" << test.size() << std::endl;
  13.  
  14.  
  15.   std::cout << test[1] << std::endl;
  16.  
  17.   //container size increased by 1  
  18.   std::cout << "size" << test.size() << std::endl;
  19.  
  20.  
  21.  
  22.   std::cout << test[1] << std::endl;
  23.  
  24.   //container size remains same
  25.   std::cout << "size" << test.size() << std::endl;
  26.  
  27.  
  28.   test[2] = int();
  29.  
  30.   //container size increased by 1  
  31.   std::cout << "size" << test.size() << std::endl;
  32.  
  33.   return 1;	
  34.  
  35. }
Runtime error #stdin #stdout 0.02s 2860KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
size0
0
size1
0
size2
0
size2
size3
https://ideone.com/8yYSk
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!