overload issue

[hjdut]

I am trying to learn class design, I tried to run the following code, but the compiler complains the ambiguous call to overloaded function, anyone could help me? Thanks



Here is the code

Header file
#ifndef RQ10_2_H_
#define RQ10_2_H_


class Person
{
private:
static const int LIMIT=25;
char lname;
char fname[LIMIT];
public:
Person();
Person(const char *ln); //person 1
Person(const char * ln, const char * fn="Heyyou");
void Show(); //firstname lastname format
void FormalShow(); //lastname, firstname format
};

#endif

Class implementation file
#include <iostream>
#include "RQ10_2.h"

Person::Person()
{
using namespace std;
cout<<"Default constrcutor called.\n";
string lname;
char fname[0]='\0';
}

Person::Person(const string * co)
{
using namespace std;
cout<<"constructor with only first name called.\n";
strcpy(lname,co);
char fname[0]='\0';
}

Person::Person(const string * co1, const char * co2)
{
using namespace std;
cout<<"constructor with both first name and last name called.n";
strcpy(lname,co1);
strcpy(fname,co2,24);
fname[24]='\0';
}

void Person::Show()
{
using std::cout;
using std::endl;
cout<<fname<<" "<<lname<<endl;
}

void Person::FormalShow()
{
using std::cout;
using std::endl;
cout<<lname<<","<<fname<<endl;
}


Main function


#include <iostream>
#include "RQ10_2.h"

int main()
{
using std::cout;
using std::endl;


Person person2("Smythecraft");
person2.Show();
Person person3("Dimwiddy","Sam");
person3.Show();
person3.FormalShow();
return 0;
}

[Peter87]

The function declaration should have the same types as the function declaration. std::string const char *

[hjdut]

Thanks Peter, but if change const char * to std::string, it gives the following error

Person::Person(std::string *)' : cannot convert parameter 1 from 'const char [12]' to 'std::string *'

[Peter87]

You probably want to use const std::string& as the type.