Any idea?

I am getting this compile error when I run the below program:

Error : illegal struct/union/enum/class definition
bubbleSort.cpp line 15 double[] a;

Error : declaration syntax error
bubbleSort.cpp line 17 };

Error : undefined identifier 'a'
bubbleSort.cpp line 21 a = new double[max];

Error : undefined identifier 'a'
bubbleSort.cpp line 27 a[nElems] = value;

Error : undefined identifier 'a'
bubbleSort.cpp line 35 cout << a[j]+ " ";

Error : undefined identifier 'a'
bubbleSort.cpp line 44 if(a[in]>a[in+1])

Error : undefined identifier 'a'
bubbleSort.cpp line 50 double temp = a[one];

Error : undefined identifier 'a'
bubbleSort.cpp line 51 a[one] = a[two];

Error : undefined identifier 'a'
bubbleSort.cpp line 52 a[two] = temp;

Error : function call 'ArrayBub()' does not match
'ArrayBub::ArrayBub(int)'
'ArrayBub::ArrayBub(const ArrayBub &)'
bubbleSort.cpp line 58 ArrayBub arr;

Error : illegal operand
bubbleSort.cpp line 59 arr = new ArrayBub(maxSize);

Error : illegal operand
bubbleSort.cpp line 75 cout<< arr.display();

Error : illegal operand
bubbleSort.cpp line 79 cout << arr.display();


Your insights are appreciated, thanks



#include <iostream.h>

class ArrayBub
{
public:
ArrayBub(int);
void insert(double);
void display();
void bubbleSort();
void swap(int, int);

private:
double[] a;
int nElems;
};

ArrayBub::ArrayBub(int max)
{
a = new double[max];
nElems = 0;
}

void ArrayBub::insert(double value)
{
a[nElems] = value;
nElems++;
}

void ArrayBub::display()
{
for(int j=0; j<nElems; j++)
{
cout << a[j]+ " ";
}
}

void ArrayBub::bubbleSort()
{
int out, in;
for (out=nElems-1; out>1; out--)
for(in=0; in<out; in++)
if(a[in]>a[in+1])
swap(in, in+1);
}

void ArrayBub::swap(int one, int two)
{
double temp = a[one];
a[one] = a[two];
a[two] = temp;
}

int main()
{
int maxSize = 100;
ArrayBub arr;
arr = new ArrayBub(maxSize);

arr.insert(2213);
arr.insert(33);
arr.insert(2);
arr.insert(58);
arr.insert(987);
arr.insert(11);
arr.insert(47);
arr.insert(7);
arr.insert(223);
arr.insert(26);
arr.insert(58);
arr.insert(7);


cout<< arr.display();

arr.bubbleSort();

cout << arr.display();



return 0;
}

double[] a;

You have to specify a size, ie: double a[12345];

use code tags!!

try this code
and repost to tell us if it works like you expect , please

IMPORTANT NOTICE: operator new() return a pointer , you should deal with it in this way

Code:

#include <iostream.h>
#include <conio.h>
class ArrayBub
{
public:
ArrayBub(int);
void insert(double);
void display();
void bubbleSort();
void swap(int, int);

private:
double* a ;
int nElems;
};

ArrayBub::ArrayBub(int max)
{
a = new double[max];
nElems = 0;
}

void ArrayBub::insert(double value)
{
a[nElems] = value;
nElems++;
}

void ArrayBub::display()
{
for(int j=0; j<nElems; j++)
{
cout << *(a)<< " ";
a++;
}
cout<<endl;
}

void ArrayBub::bubbleSort()
{
int out, in;
for (out=nElems-1; out>1; out--)
for(in=0; in<out; in++)
if(a[in]>a[in+1])
swap(in, in+1);
}

void ArrayBub::swap(int one, int two)
{
double temp = a[one];
a[one] = a[two];
a[two] = temp;
}

int main()
{
int maxSize = 100;
ArrayBub *arr;
arr = new ArrayBub(maxSize);

arr->insert(2213);
arr->insert(33);
arr->insert(2);
arr->insert(58);
arr->insert(987);
arr->insert(11);
arr->insert(47);
arr->insert(7);
arr->insert(223);
arr->insert(26);
arr->insert(58);
arr->insert(7);

arr->display();
arr->bubbleSort();
arr->display();


getche();
return 0;
}

i hope it helps
pointer