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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class A
  5. {
  6. public:
  7.     virtual void foo()
  8.     {
  9.         cout << "A::foo" << endl;
  10.     }
  11. };
  12.  
  13. class B : public A
  14. {
  15. public:
  16.     void foo(int param)
  17.     {
  18.         cout << "B::foo " << param << endl;
  19.     }
  20. };
  21.  
  22. int main()
  23. {
  24.     B b;
  25.     b.foo();
  26. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:25:11: error: no matching function for call to ‘B::foo()’
     b.foo();
           ^
prog.cpp:25:11: note: candidate is:
prog.cpp:16:10: note: void B::foo(int)
     void foo(int param)
          ^
prog.cpp:16:10: note:   candidate expects 1 argument, 0 provided
stdout 
Standard output is empty
https://ideone.com/BBcK3B
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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