Writing, ediiting from and to a file

[TechMC]

Im trying to edit and write to a file. I need some help. This is what i have so far. I want to be able to write to master.file and edit the records to master.file.

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

void main_menu ();
void master_file_menu ();
void MF_input_menu ();
void MF_view_menu ();
void MF_edit_menu ();
void MF_delete_menu ();
void transaction_file_menu ();
void TF_input_menu ();
void TF_view_menu ();
void TF_edit_menu ();
void TF_delete_menu ();

char firstn;

void main (void)
{

main_menu ();

}

void main_menu ()
{
int choice;
cout <<endl;
cout <<&quot;\t\tMain Menu&quot;<<endl;
cout <<endl;
cout <<&quot;\tPress 1 (Master File)&quot;<<endl;
cout <<&quot;\tPress 2 (Transaction File)&quot;<<endl;
cout <<&quot;\tPress 3 (End Program)&quot;<<endl;
cout <<&quot;\tEnter choice: &quot;;
cin >>choice;
if (choice == 1)
master_file_menu ();
else if (choice == 2)
transaction_file_menu ();
else if (choice == 3)
return;
else
{
cout <<&quot;INVALID ENTRY&quot;<<endl;
main_menu ();
}

}

void master_file_menu ()
{
int choice;
cout <<endl;
cout <<&quot;\t\tMaster File Menu&quot;<<endl;
cout <<endl;
cout <<&quot;\tPress 1 (Input)&quot;<<endl;
cout <<&quot;\tPress 2 (View)&quot;<<endl;
cout <<&quot;\tPress 3 (Edit)&quot;<<endl;
cout <<&quot;\tPress 4 (Delete)&quot;<<endl;
cout <<&quot;\tPress 5 (Main Menu)&quot;<<endl;
cout <<&quot;\tPress 6 (End Program)&quot;<<endl;
cout <<&quot;\tEnter choice: &quot;;
cin >>choice;
if (choice == 1)
MF_input_menu ();
else if (choice == 2)
MF_view_menu ();
else if (choice == 3)
MF_edit_menu ();
else if (choice == 4)
MF_delete_menu ();
else if (choice == 5)
main_menu ();
else if (choice == 6)
return;
else
{
cout <<&quot;INVALID ENTRY&quot;<<endl;
main_menu ();
}
}

void transaction_file_menu ()
{
int choice;
cout <<endl;
cout <<&quot;\t\tTransaction File Menu&quot;<<endl;
cout <<endl;
cout <<&quot;\tPress 1 (Input)&quot;<<endl;
cout <<&quot;\tPress 2 (View)&quot;<<endl;
cout <<&quot;\tPress 3 (Edit)&quot;<<endl;
cout <<&quot;\tPress 4 (Delete)&quot;<<endl;
cout <<&quot;\tPress 5 (Main Menu)&quot;<<endl;
cout <<&quot;\tPress 6 (End Program)&quot;<<endl;
cout <<&quot;\tEnter choice: &quot;;
cin >>choice;
if (choice == 1)
TF_input_menu ();
else if (choice == 2)
TF_view_menu ();
else if (choice == 3)
TF_edit_menu ();
else if (choice == 4)
TF_delete_menu ();
else if (choice == 5)
main_menu ();
else if (choice == 6)
return;
else
{
cout <<&quot;INVALID ENTRY&quot;<<endl;
main_menu ();
}
}
void MF_input_menu ()
{
char firstn[16];
char lastn[16];
int ssn;
char address1[20];
char address2[20];
int phone;

fstream infile;
fstream outfile;
infile.open (&quot;master.file&quot;,ios::in);
outfile.open (&quot;master.file&quot;,ios:ut);


cout << &quot;Enter First Name: &quot;;
outfile << firstn;
cin >> firstn;

cout <<&quot;Enter Last Name: &quot;;
outfile <<&quot;Enter Last Name: &quot;;
cin >> lastn;

cout <<&quot;Enter Social Security Number: &quot;;
outfile << ssn;
cin >> ssn;

cout <<&quot;Enter Address Line 1: &quot;;
outfile <<&quot;Enter Address Line 1: &quot;;
cin >> address1;

cout <<&quot;Enter Address Line 2: &quot;;
outfile <<&quot;Enter Address Line 2: &quot;;
cin >> address2;

cout <<&quot;Enter Phone Number: &quot;;
outfile <<&quot;Enter Phone Number: &quot;;
cin >> phone;
outfile << endl;





}

void MF_view_menu ()
{

ifstream infile (&quot;master.file&quot;



}

void MF_edit_menu ()
{
cout <<&quot;EDIT&quot;<<endl;
//want to be able to edit master.file from here!
}

void MF_delete_menu ()
{
fstream infile;
infile.open (&quot;master.file&quot;,ios::in);

}
void TF_input_menu ()
{
cout <<&quot;INPUT&quot;<<endl;
}

void TF_view_menu ()
{
cout <<&quot;VIEW&quot;<<endl;
}

void TF_edit_menu ()
{
cout <<&quot;EDIT&quot;<<endl;
}

void TF_delete_menu ()
{
cout <<&quot;DELETE&quot;<<endl;
}

 

[KernelObject]

whats the problem?

/Srikanth

What happens if you’re scared half to death twice?

 

[Cagliostro]

The same problem:
I have a bug in me program... please help me....!!!!

Please learn how to use debuggers, and if you have a problem, put in the forum just the lines of code where the problem resides. They are usualy no more than five lines.

Ion Filipski

 

[teriviret]

Wow, what an interesting little program! Here are some problems I see that you should address:

1. Unintended recursion in main_menu() calling main_menu().
2. Buffer-overrun exploits in MF_input_menu() with unguarded input to fixed-size buffers.
3. Runaway if-else-if-else-if-else logic -- consider using &quot;switch&quot; or better yet look-up tables.
4. Total lack of comments -- write some before you forget what the code is supposed to do.