Why wont this work??

Help Please. There are 3 seperate files. Ive narrowed down the error.

Code:

#ifndef GUARD_Character_Info
#define GUARD_Character_Info
#include <iostream>
#include <fstream>
using namespace std;


class Character_Info
{   
    private:
    char player_name[50];  //players name
    
    public:
    void name() //get players name
    {    
        cout <<"Enter your players name."<<endl;
        cin >>player_name;
        cout<<"You have entered"<<endl<<player_name<<endl;
    }
    void infOut(int pn) // !!!!!!!!part of the error
    {
        ofstream charout;
            
        charout.open("CHARACFILE.DAT", ios::app | ios::binary);
        charout.write( (char*)this, sizeof(*this));
    }
};


        
#endif

Code:

#include <iostream>
#include <conio.h>
#include "Intro.h"
#include "Character_Info.h"
using namespace std;

int main()
{
    Intro I1;
    I1.Display_Intro();
    getch();
    return 0;
}

Code:

#ifndef GUARD_Intro
#define GUARD_Intro
#include <iostream>
#include "Character_Info.h"

using namespace std;

class Intro: public Character_Info
{   
    private:
    int ch; //users choice on switch
    public:
    void Display_Intro() // display and get name
    {
        cout <<" You have just entered the world of Lost Dungeons"<<endl;
        cout <<" You will be taken on a long journey of trouble and danger."<<endl;
        cout <<" If you are up to the task then select your choice (1 or 2):"<<endl;
        
        cin >> ch;
        
        switch (ch)
        {
                case 1:
                Character_Info::name();
                Character_Info::infOut(); //!!!!!other part of error
                break;
                case 2:
                cout <<"Quitting program";
                break;
                default:
                cout <<"ERROR";
                
        }
    }

here are my compiler errors
------------------------------------------------------------------------------------
3 C:\Dev-Cpp\Main.cpp
In file included from Main.cpp
C:\Dev-Cpp\Intro.h
In method `void Intro:isplay_Intro()':
25 C:\Dev-Cpp\Intro.h
no matching function for call to `Character_Info::infOut ()'
21 C:\Dev-Cpp\Character_Info.h
candidates are: void Character_Info::infOut(int)
C:\Dev-Cpp\Makefile.win
[Build Error] [Main.o] Error 1
------------------------------------------------------------------------------------



any help will be welcome. thank you in advance. i might not respond till tomorrow so i posted so that you can answer or look into it early.Thank you

because you defined

nfOut

to take an integer as a parameter, but when you called it you didn't pass any parameters.


Also, when calling the member function from within an object or a child object, as long as the function isn't redefined in the class or a parent, you don't have to use the classname and operator :

You can instead call it just like if it was a regular function

thx but im still not getting it to work. Could you show me an example of how to do it.


NOTE GOING TO BED NOW

just change the member definition to

Code:

    void infOut()
    {
        ofstream charout;
            
        charout.open("CHARACFILE.DAT", ios::app | ios::binary);
        charout.write( (char*)this, sizeof(*this));
    }

The other thing you can change is

Code:

name();
infOut();

When they are called in display info