[Help]C++

[IM@D]

#include <iostream>
#include <string>
using namespace std;

class Stock
{
int numofshares;
string ticker;
double buyprice,currentprice;

public:
Stock(int n,string s,double a,double b)
{ numofshares=n;
ticker=s;
buyprice=a;
currentprice=b;
}
void setnumofshares(int n)
{ numofshares=n;}
int getnumofshares()
{ return numofshares; }
void setticker(string s)
{ ticker=s; }
string getticker()
{ return ticker; }
void setbuyprice(double a)
{ buyprice=a; }
double getbuyprice()
{ return buyprice;}
void setcurrentprice(double b)
{ currentprice=b;}
double getcurrentprice()
{ return currentprice; }
};

class stockAccount
{
string name;
int ownedstocks=0;
Stock owned[100];

public:
stockAccount(string s)
{ name=s;}

void buy(int numShares, string ticker, double currentPrice)
{
int j=0;
for (int i=0;i<=ownedstocks;i++)
{
if (ticker==owned[i].getticker())
{ numShares=numShares + owned[i].getnumofshares();
owned[i].setnumofshares(numShares);
owned[i].setbuyprice(currentPrice);
owned[i].setcurrentprice(currentPrice);
owned[i].setticker(ticker);
j++;}
}

if (j==0)
{owned[ownedstocks].setnumofshares(numShares);
owned[ownedstocks].setcurrentprice(currentPrice);
owned[ownedstocks].setbuyprice(currentPrice);
owned[ownedstocks].setticker(ticker);
ownedstocks++;}
}

void updatePrice(string ticker, double newPrice)
{
for (int i=0;i<=ownedstocks;i++)
{
if (ticker==owned[i].getticker())
{owned[i].setbuyprice(owned[i].getcurrentprice());
owned[i].setcurrentprice(newPrice);}
}
}

double currentValue()
{
double S=0;
for (int i=0;i<=ownedstocks;i++)
S=S+owned[i].getcurrentprice();
return S;}

double currentProfit()
{
double S=0;
for (int i=0;i<=ownedstocks;i++)
{ double J=owned[i].getcurrentprice()-owned[i].getbuyprice();
S=S+J;}
return S;}

void printReport()
{
for (int i=0;i<=ownedstocks;i++)
{
cout<<name<<"has bought "<<owned[i].getnumofshares()<<" shares of the stock "<<owned[i].getticker()<<endl;
cout<<"The current price is "<<owned[i].getcurrentprice()<<" and the buy price was "<<owned[i].getbuyprice()<<endl;
}
cout<<" The current value of all this account is "<<currentValue()<<endl;
cout<<" The current profit made from this account is "<<currentProfit()<<endl;
}
};


void main()
{
stockAccount s("John Lucky");
s.buy(100,"GE",13.5);
s.buy(25,"GOOG",110.1);
s.buy(97,"IBM",23.3);
s.buy(250,"MSFT",2.5);
s.buy(200,"YHOO",11.8);
s.updatePrice("GE",45.5);
s.updatePrice("GOOG",700.1);
s.updatePrice("IBM",86.5);
s.updatePrice("MSFT",24.8);
cout<<"The current value of the account is: "<<s.currentValue()<<endl;
cout<<"The profit made from this account is: "<<s.currentProfit()<<endl;
s.printReport();
}

(39) : error C2864: 'stockAccount:wnedstocks' : only static const integral data members can be initialized within a class
(43) : error C2512: 'Stock' : no appropriate default constructor available

May someone helps me to understand these errors, please.

[Google]

You cannot initialize data member like that unless it is declared as static const. Or if you wanna do this, do it in the constructor. As for the second error, just add Stock() { }; and you will be fine.

[IM@D]

Thanks google it worked .
But i didn't understand the second error?! eno leh jabaroune a3moul default constructor in Stock w ma baddoun wa7ad bi StockAccount?

[Adam]

I need help figuring out what sorting algorithm is being used on this array:

3, 45, 12, 7, 9, 16, 22, 55, 8
3, 7, 45, 12, 8, 9, 16, 22, 55
3, 7, 8, 45, 12, 9, 16, 22, 55
3, 7, 8, 9, 45, 12, 16, 22, 55
3, 7, 8, 9, 12, 45, 16, 22, 55
...

I've been at it for a while and it's driving me nuts.

[Kingroudy]

this algorithm is so raggedy ass.
you find out which is the smallest, you put it first.
you find out which is second smallest, you put it second, then, you need to shift (to the left) the elements that are between index 2 to index X-1 inclusive (where X is the original index of the second smallest value). After that, you check for the smallest value between index X+1 and the end of the array, and then put it at index X+1, shifting the elements that have index between X+1 and Y-1 to the left (where Y is the index of the smallest value between X+1 and the end).
and so on.

[Adam]

Yep, that's selection-sort you're describing. But if you notice in the first two lines, both 7 & 8 were moved in the same pass. Selection-sort wouldn't do that.

[Tawa]

Originally Posted by Adam

I need help figuring out what sorting algorithm is being used on this array:

3, 45, 12, 7, 9, 16, 22, 55, 8
3, 7, 45, 12, 8, 9, 16, 22, 55
3, 7, 8, 45, 12, 9, 16, 22, 55
3, 7, 8, 9, 45, 12, 16, 22, 55
3, 7, 8, 9, 12, 45, 16, 22, 55
...

I've been at it for a while and it's driving me nuts.

Bubble Sort.

[Kingroudy]

Yeah it is the bubble sort, read about it on Wikipedia.

[Tawa]

And this is how it works step by step:
Bold Black is a swap, Bold Red is not. The | character separates the sorted side from the unsorted side of the array.
-----------------------------------------------------------------
3, 45, 12, 7, 9, 16, 22, 55, 8
3, 45, 12, 7, 9, 16, 22, 8, 55
3, 45, 12, 7, 9, 16, 8, 22, 55
3, 45, 12, 7, 9, 8, 16, 22, 55
3, 45, 12, 7, 8, 9, 16, 22, 55
3, 45, 12, 7, 8, 9, 16, 22, 55
3, 45, 7, 12, 8, 9, 16, 22, 55
3, 7, 45, 12, 8, 9, 16, 22, 55 // This is the 2nd line you provided
3| 7, 45, 12, 8, 9, 16, 22, 55
3| 7, 45, 12, 8, 9, 16, 22, 55
3| 7, 45, 12, 8, 9, 16, 22, 55
3| 7, 45, 12, 8, 9, 16, 22, 55
3| 7, 45, 12, 8, 9, 16, 22, 55
3| 7, 45, 8, 12, 9, 16, 22, 55
3| 7, 8, 45, 12, 9, 16, 22, 55 // The 3rd line.
3, 7| 8, 45, 12, 9, 16, 22, 55
3, 7| 8, 45, 12, 9, 16, 22, 55
3, 7| 8, 45, 12, 9, 16, 22, 55
3, 7| 8, 45, 12, 9, 16, 22, 55
3, 7| 8, 45, 9, 12, 16, 22, 55
3, 7| 8, 9, 45, 12, 16, 22, 55 // The 4th line
3, 7, 8| 9, 45, 12, 16, 22, 55
3, 7, 8| 9, 45, 12, 16, 22, 55
3, 7, 8| 9, 45, 12, 16, 22, 55
3, 7, 8| 9, 45, 12, 16, 22, 55
3, 7, 8| 9, 12, 45, 16, 22, 55 // The 5th line
3, 7, 8, 9| 12, 45, 16, 22, 55
3, 7, 8, 9| 12, 45, 16, 22, 55
3, 7, 8, 9| 12, 45, 16, 22, 55
3, 7, 8, 9| 12, 16, 45, 22, 55 // Should've been the 6th
3, 7, 8, 9, 12| 16, 45, 22, 55
3, 7, 8, 9, 12| 16, 45, 22, 55
3, 7, 8, 9, 12| 16, 22, 45, 55 // 7th
3, 7, 8, 9, 12, 16| 22, 45, 55
3, 7, 8, 9, 12, 16| 22, 45, 55 // 8th
3, 7, 8, 9, 12, 16, 22| 45, 55 // 9th

3, 7, 8, 9, 12, 16, 22, 45, 55| // Last line
-----------------------------------------------------------------