The following code compiles well, but im having trouble with the code in red. wh

Question

The following code compiles well, but im having trouble with the code in red. when you enter a value it just never stops asking and never went to the cout part.

#include<iostream>
#include<set>
#include<map>
#include<string>
#include<algorithm>
#include<cstdlib>
#include<iomanip>
using namespace std;
template <class T>
class SimpleVector
{
private:
T *aptr;
int arraySize;
void memError();
void subError();
public:
// Default constructor
SimpleVector()
{ aptr = 0; arraySize = 0;}
// Constructor declaration
SimpleVector(int);
// Copy constructor declaration
SimpleVector(const SimpleVector &);
// Destructor declaration
~SimpleVector();
// Accessor to return the array size
int size() const
{ return arraySize; }
// Accessor to return a specific element
T getElementAt(int position);
// Overloaded [] operator declaration
T &operator[](const int &);
};
template <class T>
SimpleVector<T>::SimpleVector(int s)
{
arraySize = s;
try
{
aptr = new T [s];
}
catch (bad_alloc)
{
memError();
}
for (int count = 0; count < arraySize; count++)
*(aptr + count) = 0;
}
template <class T>
SimpleVector<T>::SimpleVector(const SimpleVector &obj)
{
arraySize = obj.arraySize;
aptr = new T [arraySize];
if (aptr == 0)
memError();
for(int count = 0; count < arraySize; count++)
*(aptr + count) = *(obj.aptr + count);
}
template <class T>
SimpleVector<T>::~SimpleVector()
{
if (arraySize > 0)
delete [] aptr;
}
template <class T>
void SimpleVector<T>::memError()
{
cout << "ERROR ";
exit(EXIT_FAILURE);
}
template <class T>
void SimpleVector<T>::subError()
{
cout << "ERROR ";
exit(EXIT_FAILURE);
}
template <class T>
T SimpleVector<T>::getElementAt(int sub)
{
if (sub < 0 || sub >= arraySize)
subError();
return aptr[sub];
}
template <class T>
T &SimpleVector<T>::operator[](const int &sub)
{
if (sub < 0 || sub >= arraySize)
subError();
return aptr[sub];
}
template <class T>
class SearchableVector : public SimpleVector<T>
{
public:
SearchableVector() : SimpleVector<T>()
{}
SearchableVector(int size) : SimpleVector<T>(size)
{ }
SearchableVector(const SearchableVector &);
void SortItems();
};
template <class T>
SearchableVector<T>::SearchableVector(const SearchableVector &obj) :
SimpleVector<T>(obj.size())
{
for(int count = 0; count < this->size(); count++)
this->operator[](count) = obj[count];
}
template <class T>
void SearchableVector<T>::SortItems()
{
for (int i = 0; i <= this->size(); i++)
{
for(int j=0;j<this->size()-1;j++)
{
if (getElementAt(j) > getElementAt(j+1))
{
T temp=this->operator [](j);
this->operator [](j)=this->operator [](j+1);
this->operator [](j+1)=temp;
}
}
}
}
//main function
int main()
{
//Variable declartion
const int SIZE = 10;
int count;
SearchableVector<double> dequeue(SIZE);
//Inputting elements to dequeue
cout<<"Enter Values: "<<endl;
for (count = 0; count < SIZE; count++)
{
cin>>dequeue[count];
}
cout << "The entered values are: ";
for (count = 0; count < SIZE; count++)
cout << dequeue[count] << " ";
cout << endl;
//Function calls to sort list of elemts in tables
dequeue.SortItems();
//Outputtind lists
cout << "After sorting: ";
for (count = 0; count < SIZE; count++)
cout << dequeue[count] << " ";
cout << endl;
//To pause system for a while
system("pause");
set<string> Set;
//Task 2 using set
//inserting party list
Set.insert("Jordan Dumlao");
Set.insert("Kayton Summers");
Set.insert("Helaman Tafua");
Set.insert("Sean Carlos");
Set.insert("Cohco Harbour");
Set.insert("Arlinda Yamaguchi");
Set.insert("Kayton Summers");
Set.insert("Ekolu Rawlins");
Set.insert("Cody Yamamoto");
Set.insert("Cohco Harbour");
Set.insert("Lashauna Wilson");
Set.insert("Kathy Todd");
Set.insert("Lashauna Wilson");
Set.insert("Gang Cheng");
Set.insert("Kyle Douglas");
Set.insert("Kevin Santana");
Set.insert("Ian Makida");
Set.insert("Theryn Groetken");
Set.insert("Kevin Santana");
Set.insert("Helaman Tafua");
Set.insert("Kathy Todd");
Set.insert("Kayton Summers");

cout << "Party List:" << endl;
// note const_iterator, not iterator. This iterator cannot be
// used to make changes to the set
set<string>::const_iterator setItr;
for(setItr = Set.begin(); setItr != Set.end(); setItr++)
{
cout << *setItr << endl;
}
cout << endl;
//To pause system for a while
system("pause");
//Task 3 using map
map<int, int> histogram;
int a=0;
while(a>=0)
{
cout << " enter value of a" ;
cin >>a;
histogram[a]++;
}
map<int,int>::iterator it;
for ( it=histogram.begin() ; it != histogram.end(); it++ )
{
cout << (*it).first << " occurs " << setw(3) << (*it).second << (((*it).second == 1) ? " time." : " times.") <<endl;
}
return 0;
}

Explanation / Answer

int a=0; while(a>=0) { cout >a; if(a>0){ histogram[a]++; }// make change like this } and enter '-1' to terminate cin; hope this will help you . write to me if need more help.

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