Why this function overloading is not working?
class CConfFile
{
public:
CConfFile(const std::string &FileName);
~CConfFile();
...
std::string GetString(const std::string &Section, const std::string &Key);
void GetString(const std::string &Section, const std::string &Key, char *Buffer, unsigned int BufferSize);
...
}
string CConfFile::GetString(const string &Section, const string &Key)
{
return GetKeyValue(Section, Key);
}
void GetString(const string &Section, const string &Key, char *Buffer, unsigned int Buffe开发者_StackOverflow社区rSize)
{
string Str = GetString(Section, Key); // *** ERROR ***
strncpy(Buffer, Str.c_str(), Str.size());
}
Why do I get an error too few arguments to function ‘void GetString(const std::string&, const std::string&, char*, unsigned int)'
at the second function ?
Thanks
You haven't scoped the second function with CConfFile::
. It is being compiled as a free function, so the call to GetString
resolves to itself (recursively), which requires four parameters.
Because the CConFile::GetString()
is, as the name suggest, a class member function, that is not accessible the way you call it in the second function.
The other function you're declaring, GetString()
, is a global one.
You just forgot to add CConFile::
to the second function...
I would say it is because of not having a CConfFile instance to call that function, so it is assuming you are calling the other one.
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