Help! File Handling!!!

Hey guyz, dis is sevenaces
this is my first post at c boards...
but i have a problem here.
i need to make a prgrm to sort a binary file with a class w.r.t a specific variable maybe a variable 'x' arranged alphabetically...
it hs to be mostly c++...using most c commands is not allowed...
and the most important thing...
it has to be done using pointers to handle the file...
pls help me out...
:confused: :confused:

1)Search for solutions on your own
2)Post your attempts
3)Grammer is your friend

well..after wasting quite sum couple of hrs i messed uo and hv started to write it again...
here's wat i hv gt till nw...

Code:

---

#include<iostream.h>
#include<fstream.h>

class bin
{
private:
        int a;
public:
        bin(int a)
        {
                cout<<"\n  Pointer successfuly created...";
        }
        bin()
        {
                cout<<"\n  Enter values for the object : ";
                cin>>a;
                wtf();
        }
        void wtf();
        void rfm();
} s;

void main()
{
        bin *p;
        int n, i;
        cout<<"\n  Enter no of objects to be created : ";
        cin>>n;
        i=n-1;
        while(i)
        {
                i--;
                p=new bin;       
                delete(p);
        }
        s.rfm();

}

void bin::rfm()
{
        int i=0;
        ifstream f;
        f.open("bin");
        f.seekg(0, ios::beg);
        f.read((char*)&s, sizeof(s));
        cout<<"\n  The following data is present : ";
        while(f)
        {
                cout<<"\n  Record no."<<++i;
                cout<<"\n  A = "<<s.a;
                f.read((char*)&s, sizeof(s));
        }
        f.close();
}

void bin::wtf()
{
        ofstream f;
        f.open("bin", ios::app);
        f.write((char*)&s, sizeof(s));
        f.close();
}

---

i yet hv to rewrite the func. sorting...

Quote:

---

#include<iostream.h>
#include<fstream.h>

---

That should be:

Code:

---

#include<iostream>
#include<fstream>

---

Quote:

---

void main()

---

should be:

Code:

---

int main()

---

You member function names need to be more descriptive.

Code:

---

>                p=new bin;       
//Here you would want to call wtf
                p.wtf();
>                delete(p);
>        }
>        s.rfm();
//Here you could create a new instance of the class, then call rfm
        s temp;
        temp.rfm();

---

forget about what code i hav given....
please just someone post the function for sorting....

std::sort

Keep typing like that and you will probably not recieve much more help here. Some of us may not be sophisticated, but we all enjoy that people show the curtisy to not type like morons... lets examine your posts.

'guyz' takes same number of keystrokes, but you have to reach in a more awkward way than to hit an s.

'dis' is one of the few that is a time saver in the end, but this is not german and we are not going towards the germanic roots of english, please just use 'th' when it should be there.

'prgrm' not only is it wrong but it looks silly. Program is only 2 more letters.

'w.r.t' I have no idea what that is.

'hs' come on, 'a' is right there when you are hitting 's'.

'pls' is the only one that is commonly used on the net that I have seen so far, by people who type in a mannor that is readable, but if you are asking for help, why not take the time to spell it out.

'sum' is the result of adding numbers, 'some' is the word you were looking for.

'hrs' common shortening, no big deal.

'uo' common typo... again no biggy.

'hv' this one is what lead me to believe the hs of above wasn't just a typo, 2 extra letters, dont be lazy.

'wat' perhaps you are a native spanish speaker and forgot about the 'h' I know a couple people who natively speak spanish and make this mistake.

'gt' maybe you just loath vowels... but if that were the case, 'wat' would be 'wht' hmmm...

'4get' you save 2 keystrokes and have to reach farther...

Anyway. I gotta go, please respect the members of the board more.

You write like a retard. Besides, all your variables have completely meaningless names which is a big no-no.

which variable do you think make no sense???

>> You write like a retard.
What was that in aid of? /!\

>> Besides, all your variables have completely meaningless names which is a big no-no.
I agree, but I am a self-admitted pedantic with respect to naming functions/variables and code formatting, so I'm rather biased.

Wraithan w,r,t - with respect to. I was gonna use that in the above text, it's kinda eng-speak which is why I know it. I generally assume nobody knows the acronyms I do, so i tend not to use them.

>You write like a retard.
I agree. This is a message board, not a chat bot. And if you think someone's going to do your homework for you here, think again.

Ok, the wrt one is my fault, I assumed it was some sort of trashtyping speak. I have never seen that acronym.