Thread: I Need An immediately Help plz

I spot two typos. Check the spelling of your variables.

Edit: Also, it should be

Code:

using namespace std;

(semicolon, not colon)

Edit: Correction, at least 3 misspelled variables (including struct members).

Yes, and the compiler should be telling you (the OP) where/what exactly those problems are so what's the deal?

[edit]And read the posting guidelines... particularly items 2 and 3 below:

Some issues of netiquette to particularly note are:
1. Don't use all caps
2. Use descriptive subject lines
3. Do not put URGENT!, or NEED HELP NOW, etc. in your title; it will not make people look at it any faster. Doing this makes many old time helpers on this board not look at the post at all.

[/edit]

Structs and classes are essentially the same thing in C++. So the only change to make it use a class instead of struct would be:

Code:

class CDAcount
{
	public:
	double balance;
	double interest_rate;		
	int term;

};

However, I assume you are supposed to move some functionality from main and elsewhere into this class by making them member functions.

For example:

Code:

class CDAcount
{
        public:
        void ReadData();
	private:
	double balance;
	double interest_rate;		
	int term;

};

void CDAcount::ReadData()
{
    /* 
         read input from console and assign to member variables'
    */
}

[/code]

Redefine CDAcount from Display 10.1 so that it is a class rather than a structure.

In other words, I'm guessing that the code given was from "Display 10.1", and thus is valid C++; and that our new brother, SONY, just didn't copy it properly.

Use the same member variables as in Display 10.1 but make them private.

Easy enough.

Code:

class CDAcount
{
private:
	double balance;
	double interest_rate;		
	int term;
};

Include member functions for each of the following: one to return the initials balance, one to return the balance at maturuity, one to return the interest rate, and one to return the term.

Very simple as well, if you know how to write class member functions, since those function just return the values of variables. (They're sometimes called "get" functions.) If you don't know how, then check out this tutorial and this example:

Code:

class c {
private:
    int var;
public:
    int get_var();
};

int c::get_var() {
    return var;
}

Or, with simpler syntax that requests that get_var be made inline:

Code:

class c {
private:
    int var;
public:
    int get_var() { return var; }
};

I'd actually use the second method, since it's such a trivial function; but for most function you should use the first method.

Include a constructor that sets all of the member variables to any specified values, as well as a default constructor.

So you probably need a CDAccount() and CDAccount(double, double, int). The syntax for constructors is a little different than normal class member functions. Check out the tutorial I linked to earlier: http://www.cprogramming.com/tutorial/lesson12.html

(I'm assuming that CDAcount is just CDAccount misspelled.)

Also, include an input member function with one formal parameter of type istream and an output member function with one formal parameter of type ostream.

You'll need something along the lines of

Code:

void c::read(istream &i);
void c::write(ostream &o);

Embed your class definition in a test program.

Left as an exercise to the programmer . . .