Overload method problem in Derived class.

fantasy1215 · 03-27-2013, 10:26 PM

Code:

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <memory>
using namespace std;
class CFather
{
public:
    void DoWork(int val)
    {   
    }   
};
class CSon : public CFather
{
public:
    void DoWork(int val, int two)
    {   
    }   
};
int main(void)
{
    CSon* myson = new CSon;
    myson->DoWork(12);
    delete myson;
}

When I compile the code above, g++ complains:
derived_test.cpp:24: error: no matching function for call to 'CSon:: DoWork(int)'
derived_test.cpp:17: note: candidates are: void CSon:: DoWork(int, int)
I don't get the reason and how to solve this problem, Any advice would be kind, Thanks in advance.

evo2 · 03-27-2013, 11:49 PM

Hi,

CFather:

oWork(int) has been hidden by CSon:

oWork(int,int).
You can overcome this by adding a "using" statement to the CSon. Eg

Code:

class CSon : public CFather
{
public:
    using CFather::DoWork;
    void DoWork(int val, int two)
    {   
    }   
};

HTH,

Evo2.