#ifndef MGR #define MGR class arraymgr {     int total_elements,max_elements;     int * thearray; public:     arraymgr(int);     ~arraymgr();     bool addelement(int);     bool getelement(int,int &);     bool deleteelement(int);     bool findelement(int,int &);     void showelements();     int getsize(); }; #endif #ifndef a #define a #include"mgr.h" #include<iostream> using namespace std; arraymgr::arraymgr(int num) {     max_elements=num;     total_elements=0;     thearray=new int [max_elements]; } arraymgr::~arraymgr() {     delete [] thearray; } bool arraymgr::addelement(int num2) {     if(total_elements>=max_elements-1)        return false;     else         thearray[total_elements++]=num2;     return true; } bool arraymgr::getelement(int position,int& element) { if(position>total_elements||position<0) return false; else element=thearray[position]; return true; } bool arraymgr::deleteelement(int position) {     if(position>total_elements||position<0)       return false;     else     {         for(int i=position;i<=total_elements-1;i++)             thearray[i]=thearray[i+1];         total_elements--;     }   return true; } bool arraymgr::findelement(int position,int &element) { if(position>total_elements||position<0)      return false; else      element=thearray[position]; return true; } void arraymgr::showelements() {     cout<<endl;     for(int i=0;i<total_elements;i++)       cout<<thearray[i]<<" ";     cout<<endl; } int arraymgr::getsize() {     return total_elements; } #endif #ifndef b #define b #include"mgr.h" #include"a.h" #include<iostream> using namespace std; class applause {     arraymgr* arraybase;     int menu();     void add();     void remove();     void retrieve();     void find();     void list();     void size(); public:     applause();     void run(); }; #endif #ifndef c #define c #include"b.h" #include<iostream> using namespace std; #define max 10 applause::applause() {     arraybase=new arraymgr(max); } void applause::run() {     int choice=menu();     while(choice!=7)     {         switch(choice)         {         case 1:             add();             break;         case 2:             remove();             break;         case 3:             retrieve();             break;         case 4:             find();             break;         case 5:             list();             break;         case 6:             size();             break;         }         choice=menu();     } } int applause::menu() {     int choice;     cout<<"1.add a element."<<endl;     cout<<"2.remove a element."<<endl;     cout<<"3.retrive an item by its' position in the structure."<<endl;     cout<<"4.find a element."<<endl;     cout<<"5.show the elements of the list."<<endl;     cout<<"6.show the size of the list."<<endl;     cout<<"7.exit."<<endl;     cin>>choice;     return choice; } void applause::add() {     int value;     cout<<endl<<"Enter a new element:";     cin>>value;     bool result=arraybase->addelement(value);     if(result)         cout<<endl<<"element added successfully."<<endl;     else         cout<<endl<<"failture to add a new element to the list."<<endl; } void applause::remove() {     int position;     cout<<endl<<"please input the element deleted position: ";     cin>>position;     bool result=arraybase->deleteelement(position);     if(result)         cout<<endl<<"delete the element successfully."<<endl;     else         cout<<endl<<"failture to delete the element."<<endl; } void applause::retrieve() {     int position,value;     cout<<endl<<"Enter the the element's postion:";     cin>>position;     bool result=arraybase->getelement(position,value);     if(result)         cout<<endl<<"the element is:"<<value<<endl;     else         cout<<endl<<"cannot get the element due to the position error."<<endl; } void applause::find() {     int value,pos;     cout<<endl<<"please input the element:";     cin>>value;     bool result=arraybase->findelement(value,pos);     if(result)         cout<<endl<<"the elem"<<value<<"at "<<pos<<endl;     else         cout<<endl<<"cannot find the elem in the list."<<endl; } void applause::list() {     arraybase->showelements(); } void applause::size() {     cout<<endl<<"there are "<<arraybase->getsize()         <<" elements int the list."<<endl; } #endif                       #include"mgr.h" #include"a.h" #include"b.h" #include"c.h" #include<iostream> using namespace std; int main() {     applause* theapp=new applause();     theapp->run();     return 0; }

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