Разработать класс с набором функций для управления односвязным списком

class metio
{public:
void add_item(); //добавляем элементы, может она и не void
void delete_item();//удаляем, может она и не void, это узнаешь когда тела напишешь
void edit_item(); //редактирование
void put();//вывод
}

#include <iostream>
#include "state.h"
using std::cout;
using std::cin;
using std::endl;
 
 
void Function1(int d){
cout<<"\tВызвана функция Function1 с параметром d = "<<d<<endl;
}
void Function2(int d){
cout<<"\tВызвана функция Function2 с параметром d = "<<d<<endl;
}
void Function3(int d){
cout<<"\tВызвана функция Function3 с параметром d = "<<d<<endl;
}
 
int main(){
StatesManager SM;
setlocale(LC_ALL,"Rus");
int q,nf;
void (*pF)(int);
do{
system("cls");
cout<<"Колличество состояний в стеке: "<<SM.GetCount()<<endl;
cout<<"Вызов текущей функции: "<<endl;
SM.ExecuteHead();
cout<<"Выберите действие (EXIT - 0; PUSH - 1; POP 2): ";
cin>>q;
cout<<endl;
 
if (q==1){
cout<<"Выберите функцию (1,2,3): ";
cin>>nf;
cout<<endl;
pF=0;
switch (nf){
case 1:
pF=Function1;
break;
case 2:
pF=Function2;
break;
default:
pF=Function3; break;
}
}
switch(q){
case 1:
SM.StatePush(pF);
break;
case 2:
SM.StatePop();
break;
default:
q=0; break;
}
}while(q);
 
return 0;
}
 
//////////////////////////////////////////////////////////////////////////
//////////////////////////////state.h////////////////////////////////////
/////////////////////////////////////////////////////////////////////////
#ifndef _STACK_H_
#define _STACK_H_
 
class StatesManager{
private:
typedef struct STATE{
void (*Func)(int);
STATE *pNext;
} STATE;
STATE * pStates;
int nCount;
public:
int GetCount();
StatesManager();
~StatesManager();
bool StatePush(void (*Func)(int));
bool StatePop();
void ExecuteHead();
};
 
#endif//_STACK_H_
 
 
 
//////////////////////////////////////////////////////////////////////////
////////////////////////////state.cpp///////////////////////////////////
//////////////////////////////////////////////////////////////////////////
#include "state.h"
 
StatesManager::StatesManager(){
this->nCount=0;
this->pStates=0;
}
 
StatesManager::~StatesManager(){
STATE *pS;
while(pStates){
pS=pStates;
pStates=pStates->pNext;
delete pS;
}
}
 
int StatesManager::GetCount(){return this->nCount;}
 
bool StatesManager::StatePush(void (*Function)(int)){
if (Function==0)
return false;
STATE *pNS=new STATE;
pNS->Func=Function;
pNS->pNext=this->pStates;
this->pStates=pNS;
this->nCount++;
return true;
}
bool StatesManager::StatePop(){
if (!pStates)
return false;
STATE *pTS;
pTS=this->pStates;
this->pStates=this->pStates->pNext;
delete pTS;
this->nCount--;
if (!pStates)
return false;
return true;
}
void StatesManager::ExecuteHead(){
if(pStates){
pStates->Func(this->nCount);
}
}