I need help creating a teacher classroom phone book program for c++ and I am con

Question

I need help creating a teacher classroom phone book program for c++ and I am confused where to start. The sample output menu should look like: 'a' --- Add person 'd' --- Delete person 'p' --- Print 'q' --- Quit 'r' --- Reset (which should reread the data file) 's' --- Sort and 'w' ---- Write (which should overwrite the data file).

Also we must have a setw of around 50 and set length of around 5 for the 'a' command

output of 'a' should look like:

Adding person...

enter first name: Joe

enter last name: Smith

enter classroom (please no spaces): SB108

enter classroom phone extension (4 characters): 123

the 'd' command should ask something like :

Please enter a first name, last name, class room or extension

Delete Joe Smith ( Y or N) Y

1 record deleted

The 'p' command should:

print out this:

First Name Last Name Classroom Extension

====================================================

Joe Smith SB108 8888

the spacing inbetween needs to be like 12 characters, then 16, then 12 then 12

the 'q' command:

should just quit the program

the 'r' command:

should reread the data file and say something like:

Phone book reset. Size is: 9

if there is an error in the 'r' command please state so

The 's' command:

creates a submenu that will sort via first name, last name , classroom and extension

Looks like:

Please choose one of:

f Sort by first name

l Sort by last name

e Sort by extension

c Sort by classroom

Sorting complete.

Explanation / Answer

The name of the class is “contact”. There are two data members – name and mob

class contact
{
string name;
string mob;
  
public:
contact(): name(""), mob("")
{}
bool show();
bool show(string search_term);
bool name_exists(string tname);
bool add(string new_name, string new_mob);
bool edit(string);
bool erase(string new_name);
};

0. Show contacts.
1. Add contact.
2. Edit contact.
3. Delete contact.
4. print contact.
5. sort contact
6. write contact.
7.exit
cout << "0. Show contacts" << endl
<< "1. Add Contact" << endl
<< "2. Edit Contact" << endl
<< "3. Delete Contact" << endl
<< "4. Print" << endl
<< "5. Sort" << endl
<<"6. Write"<<end1
<<"7. Exit"<<end1<<end1
<< "Your choice...";
cin >> choice;

The following code shows all the contacts from the contacts-list. Examine the below code to understand how it works.
//This block of code resides inside the main function
cout << "Showing Contacts" << endl;
printline('-', 50);
  
for(i=0; i<100; i++)
if(person[i].show())
flag = 1;
  
if(!flag)
cout << "No contacts found!" << endl;

//This block of code resides inside the class
bool show()
{
if(name != "")
{
cout << name << " " << mob << endl;
return 1; //Indicates success
}
else
return 0; //Indicates failure
}

The following code adds a new contact to the contacts-list of the Phonebook application.
//The following code resides in the main function.
cout << "Add New Contact press $ to cancel" << endl;
printline('-', 20);
counter = 0;
  
//Loop until correct name and mobile number are entered
do
{
flag = 0;
if(counter)
cout << "Try again press $ to cancel"
                       << endl;
                      
//counts how many times the do-while loop executes
                   counter++;
  
cout << "Name: "; cin >> temp_name;
  
//Cancel operation
if(temp_name=="$")
{
cancel_flag = 1;
break;
}
cout << "Mobile No.: "; cin >> temp_mob;
  
//Cancel operation
if(temp_mob=="$")
{
cancel_flag = 1;
break;
}
  
//Check whether name exists
for(i=0; i<100; i++)
if(person[i].name_exists(temp_name))
{
cout << "The name you entered is already there"
                           "in the phonebook, enter a different name."
                           << endl;
flag = 1;
break;
}
  
}while(!name_valid(temp_name) ||
                               flag ||
                       !mob_valid(temp_mob));
  
if(cancel_flag)
{
system("cls");
break;
}
  
  
//This code adds the contact to phonebook
for(i=0; i<100; i++)
if(person[i].add(temp_name, temp_mob))
{
cout << "Contact added successfully!" << endl;
flag = 1;
break;
}
  
if(!flag)
cout << "Memory full! Delete some contacts first."
                   << endl;

//The following code resides in the class
bool add(string new_name, string new_mob)
{
if(name=="")
{
name = new_name;
mob = new_mob;
return 1; // Success
}
else
return 0; // Failure
  
}
The following code edits an existing contact. It edits both – name and mobile number.
//The following code resides in the main function
cout << "Enter a contact name to edit:"
               " press $ to cancel ";
               cin >> temp_name;
  
//Cancel Operation
if(temp_name=="$")
{
system("cls");
break;
}
  
for(i=0; i<100; i++)
if(person[i].edit(temp_name))
{
cout << "Edited Successfully!" << endl;
flag = 1;
break;
}
  
if(!flag)
cout << "Contact name not found!" << endl;
  

//The following code resides in the class
bool contact :: edit(string new_name)
{
string new_mob;
if(new_name==name)
{
cout << "Enter new name: "; cin >> new_name;
cout << "Enter new mobile no: "; cin >> new_mob;
  
name = new_name;
mob = new_mob;
return 1;
}
else
return 0;
}
The following code removes a contact from the contacts-list in the Phonebook application.
// The following code resides in the main function.
do
{
if(counter)
cout << "Try again" << endl;
counter++;
cout << "Enter a contact name to delete:"
                   " press $ to cancel ";
                   cin >> temp_name;
  
//Cancel Operation
if(temp_name=="$")
{
system("cls");
break;
}
  
  
//Final Confirmation
for(i=0; i<100; i++)
if(person[i].name_exists(temp_name))
{
flag = 1;
cout << "Are you sure you want to delete? (1/0)"
                       << endl;
int yes;
cin >> yes;
if(!yes)
{
system("cls");
cancel_flag = 1;
}
break;
}
  
if(!flag)
cout << "Contact name not found!" << endl;
  
if(cancel_flag)
break;
  
// This code deletes the contact
if(flag)
{
for(i=0; i<100; i++)
if(person[i].erase(temp_name))
{
cout << "Deleted successfully!" << endl;
break;
}
}
  
}while(!flag);

// The following code resides in the class
bool erase(string new_name)
{
if(new_name==name)
{   
name = "";
mob = "";
return 1;
}
else
return 0;
}
he following code searches for a contact.
// The following code resides in the main function.
do
{
if(counter)
cout << "Try again" << endl;
counter++;
cout << "Search a name: press $ to cancel ";
                   cin >> temp_name;
  
//Cancel Operation
if(temp_name=="$")
{
system("cls");
break;
}
  
for(i=0; i<100; i++)
if(person[i].show(temp_name))
{
flag = 1;
break;
}
  
if(!flag)
cout << "Contact name not found" << endl;
}while(!flag);

// The following code resides in the class
bool show(string search_term)
{
if(search_term == name)
{
cout << name << " " << mob << endl;
return 1;
}
else
return 0;
}
The printline() function prints a line. You can specify the size and the character for drawing the line.
void printline(char ch, int size)
{
for(int i=0; i<size; i++)
cout << ch;
cout << " ";
}

Two functions have been used for validations. One is name_valid(), another is mob_valid. The first one checks whether the name is valid, while the second function checks whether the mobile number is valid.
Code:

bool name_valid(string tname)
{
if(tname.size()>50)
{
cout << "Invalid Name! Enter a name within 20 characters!"
       << endl;
return 0;
}
else if(tname == "")
{
cout << "Invalid Name! Name cannot be blank!" << endl;
return 0;
}
else
return 1;
}

//mobile number validation
bool mob_valid(string tmob)
{
if(tmob.size()>13 || tmob.size()<10)
{
cout << "Invalid mobile no. Enter a no."
       "between 10 and 13 digits" << endl;
return 0;
}
else if(tmob == "")
{
cout << "Invalid mobile no. Mobile"
       "no cannot be blank" << endl;
return 0;
}
else
return 1;
}

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.