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  1. #include <iostream>
  2. using namespace std;
  3. class Class
  4. {
  5. public:
  6. int a;
  7. int b;
  8. Class() : a(10)
  9. {
  10.  
  11. };
  12. };
  13.  
  14. int main ()
  15. {
  16. Class A;
  17. cout << A.a;
  18. cout << A.b;
  19. return 0;
  20. }
Compilation error #stdin compilation error #stdout 0s 3412KB
stdin
Standard input is empty
compilation info
prog.cpp: In constructor 'Class::Class()':
prog.cpp:8:12: error: anachronistic old-style base class initializer [-fpermissive]
  Class() : (a=10), b(20)
            ^
prog.cpp:8:10: error: unnamed initializer for 'Class', which has no base classes
  Class() : (a=10), b(20)
          ^
stdout
Standard output is empty