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Nov 2nd, 2009
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problems with vectors

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Hi guys, Sorry to ask a question as my first post. I'm totally new with c++ and I couldn't understand much about vectors.

C++ Syntax (Toggle Plain Text)
  1.                    case 1:
  2.                         {
  3.                         cout<<"Enter [S]avings Account , [C]hecking Account,[G]eneral Account"<<endl;
  4.                         cin>>selection;
  5.                         if ((selection == 'G') || (selection == 'g'))
  6.                         {
  7.  
  8.                          acc.push_back(newAccount);
  9.                          cout<<"New account added"<<flush<<endl;
  10.                          break;
  11.                          }//end if
  12.                          else if ((selection == 'C') || (selection =='c'))
  13.                          {
  14.                               checkingAccount newCheckingAcc(inType2);
  15.  
  16.                               checking.push_back(newCheckingAcc);
  17.                               cout<<"New checking Account added"<<flush<<endl;
  18.  
  19.                          }//end else if
  20.                          else if ((selection == 'S') || (selection == 's'))
  21.                          {
  22.                               savingsAccount newSavingsAcc(inType1);
  23.  
  24.                               savings.push_back(newSavingsAcc);
  25.                               cout<<"New savings account added"<<flush<<endl;
  26.                         }//end else if
  27.  
  28.  
  29.                         }//end case 1

C++ Syntax (Toggle Plain Text)
  1.              account(string inType)
  2.              {        
  3.  
  4.                       _strdate(dateOpened);
  5.                       accountNumber =  accountNumber+1;
  6.                       accountBalance = 0.0;
  7.                       type = inType;
  8.  
  9.  
  10.              };

the problem is this
C++ Syntax (Toggle Plain Text)
  1.             class checkingAccount : public account
  2.              {
  3.                    public:
  4.                    checkingAccount(string inType);
  5.  
  6.                    int minBalance;
  7.                    public:
  8.                           bool checkingAccount:: styleChecker(int inMinBalance);
  9.                    };
  10.  
  11.                    checkingAccount::checkingAccount(string inType){};

I get the error:
In constructor `checkingAccount::checkingAccount(std::string)':
no matching function for call to `account::account()'

please help.

regards,
Irwin
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guguman is offline Offline
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Re: problems with vectors
did you included the header ( .h ) in the .cpp file?
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Re: problems with vectors
Click to Expand / Collapse  Quote originally posted by Cosmin871 ...
did you included the header ( .h ) in the .cpp file?
wasn't taught to have one. What the lecturer taught was having everything in one .cpp file which I thought was messy.
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Re: problems with vectors
could you post you're entire code, i think that that is the problem
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Re: problems with vectors
From what I can tell from the error your account class has no default constructor. When you declare a constructor for a class, the compiler expects you to supply all constructors, including the default constructor.

checkingaccount inherits from account, which means it will first contruct an account object and then a checkingacount object. It calls the account::account() function, which appears to be missing.
Last edited by BeyondTheEye; Nov 2nd, 2009 at 5:39 pm.
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BeyondTheEye is offline Offline
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Re: problems with vectors
What it is telling you is it can't find a matching function to construct the base class 'account'.

If there is not one, change your checkingAccount constructor to call the correct account constructor...

C++ Syntax (Toggle Plain Text)
  1.  
  2. checkingAccount::checkingAccount(string inType)
  3. :account(inType)
  4. {
  5. };
SVR
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Re: problems with vectors
it says here : no matching function for call to `account::account()'
Last edited by guguman; Nov 2nd, 2009 at 5:47 pm.
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Re: problems with vectors
Click to Expand / Collapse  Quote originally posted by SVR ...
What it is telling you is it can't find a matching function to construct the base class 'account'.

If there is not one, change your checkingAccount constructor to call the correct account constructor...

C++ Syntax (Toggle Plain Text)
  1.  
  2. checkingAccount::checkingAccount(string inType)
  3. :account(inType)
  4. {
  5. };
after I did this, another error came out.
redefinition of `savingsAccount::savingsAccount(std::string)'

if i remove
C++ Syntax (Toggle Plain Text)
  1. savingsAccount::savingsAccount(string inType):account(inType){}

and insert 
            class checkingAccount : public account
             {
                   public:
                   checkingAccount(string inType):account(inType){};
                 
                   
                   int minBalance;
                   public:
                          bool checkingAccount:: styleChecker(int inMinBalance);
                   };
it now compiles properly!

it's silly of me for doing this as I read through some code samples on the internet and followed blindly.
Last edited by guguman; Nov 2nd, 2009 at 5:54 pm. Reason: more details
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Re: problems with vectors
Sorry again as I have another question to ask. How do I exactly select an element from the vector to successfully make a withdrawal(accountBalance - withdrawal)

C++ Syntax (Toggle Plain Text)
  1.                    case 3:
  2.                         {
  3.                          cout<<"Deposit"<<endl;
  4.                          cout<<"======="<<endl;
  5.                          cout<<"Please enter ammount to deposit : "<<flush;
  6.                          cin>>ammount;
  7.                          double temp2;
  8.                          account newAccount(inType1);
  9.                          newAccount.makeDeposit(ammount);
  10.                          acc.push_back(newAccount);
  11.                          temp = "+" + ss.str();
  12.                          transactions.push_back(temp);
  13.                          cout<<"Deposit successful"<<endl;
  14.                          cout<<"New balance :"<<newAccount.getBalance()<<endl;
  15.                          }//end case 3

I've read on the internet about a function called replace() but I certainly have no idea on how to implement it here. Should I copy the target element then deleting it and replace with a new one?
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guguman is offline Offline
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Nov 3rd, 2009
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Re: problems with vectors
I don't think it is doing what you think it is.

C++ Syntax (Toggle Plain Text)
  1.                          account newAccount(inType1);
  2.                          newAccount.makeDeposit(ammount);
  3.                          acc.push_back(newAccount);

Here you are creating & storing a new account everytime you make a deposit?

What you should be doing is asking for the account to use after presenting a list from the vector.

1 Savings
2 Checking
3 Credit 1

Then use the selection as the index into the acc vector to get the correct account to manipulate...

acc[iSel].makeDeposit(amount);

cout<<"New balance :"<<acc[iSel]..getBalance()<<endl;
SVR
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