fork download 
  1. #include<iostream>
  2.  
  3. struct B { 
  4.   union U {
  5.     struct S {
  6.     // some data
  7.     } s;
  8.     int i = 100;
  9.   }
  10.   u;  
  11. };
  12.  
  13. int main () {
  14.   B obj;
  15.   std::cout << "obj.u.i = " << obj.u.i << "\n";
  16. }
  17.  
Success #stdin #stdout 0s 2852KB
comments (?)
stdin 
Standard input is empty
stdout 
obj.u.i = 0
https://ideone.com/0213tb
language:
C++14 (gcc 8.3)
created:
10 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!