I am trying to add these to my program. can you help with that. Thanks.

1) Store all entries in the phonebook into a location/file-name specified by the user. 2) Retrieve entries from the location/file-name specified by the user.

#include

#include

#include

#include

//Function prototypes

void Add();

void Delete();

void Display();

void Alphabetical();

void Number();

void Random();

void DeleteAll();

//Structure for Phonebook list

typedef struct PhoneBookList {

char *FirstName;

char *LastName;

char *PhoneNumber;

} list;

//Structure for delete

typedef struct DeleteEntry {

char *FirstName;

char *LastName;

} take;

//Pointers to structures

list *lt;

take *tk;

//Global variables

int count = 0;

int delCount = 0;

int main(void)

{

//Variable declarations

int iSelection;

do { //Print menu to screen, ask user for selection

printf(" \t\t\tPhone Book: ");

printf("\t1) Add contact ");

printf("\t2) Delete contact ");

printf("\t3) Display phone book ");

printf("\t4) Sort contact alphabetically by last name ");

printf("\t5) Find phone number for given name ");

printf("\t6) Randomly select contact ");

printf("\t7) Delete all contacts ");

printf("\t8) Exit ");

printf("\tWhat do you want to do? ");

scanf("%d", &iSelection);

switch (iSelection) {

case 1: //Add entry

Add();

break;

case 2: //Delete entry

Delete();

break;

case 3: //Display all entries

Display();

break;

case 4: //Sort entries alphabetically

Alphabetical();

break;

case 5: //Find phone number

Number();

break;

case 6: //Randomly select contact

Random();

break;

case 7: //Delete all contacts

DeleteAll();

break;

case 8: //Break loop and close program

break;

default: //User entered an invalid number

printf(" \t\tYou entered an invalid selection. Try again. ");

break;

} //End Switch

} while (iSelection != 8); //End Do While loop

//Return used memory

free(tk);

free(lt);

tk = NULL;

lt = NULL;

return 0;

} //End Main

//Add an entry

void Add()

{

char *leftName;

if (count == 0)

{

lt = (list *) malloc ((count*25) + 25);

}

else

{

lt = (list *) realloc (lt, (count*50) + 50);

}

if (lt == NULL)

{

printf("You cannot add more memory ");

}

else

{

lt[count].FirstName = (char *) malloc(sizeof(char)*15);

lt[count].LastName = (char *) malloc(sizeof(char)*15);

lt[count].PhoneNumber = (char *) malloc(sizeof(char)*15);

printf(" \tEnter their First Name: ");

scanf("%s", lt[count].FirstName);

printf(" \tEnter their Last Name: ");

scanf("%s", lt[count].LastName);

printf(" \tEnter their Phone Number: ");

scanf("%s", lt[count].PhoneNumber);

printf(" \t\t\tContact added! ");

}

count++;

}//End Function

//Delete an entry

void Delete()

{

int i;

int q = 0;

char *userName;

if (delCount == 0)

{

tk = (take *) malloc ((delCount*25) + 25);

}

else

{

tk = (take *) realloc (tk, (delCount*1) + 1);

}

if (tk == NULL)

{

printf("This cannot be deleted (out of memory) ");

}

else

{

tk[delCount].FirstName = (char *) malloc(sizeof(char)*15);

tk[delCount].LastName = (char *) malloc(sizeof(char)*15);

printf(" \tEnter their First Name: ");

scanf("%s", tk[delCount].FirstName);

printf(" \tEnter their Last Name: ");

scanf("%s", tk[delCount].LastName);

}

for (i = 0; i < count; i++)

{

if (lt[i].FirstName == NULL && lt[i].LastName == NULL) continue;

if (strcmp(lt[i].FirstName, tk[delCount].FirstName) == 0 && strcmp(lt[i].LastName, tk[delCount].LastName) == 0)

{

printf(" \t\t\t%s %s has been deleted! ", lt[i].FirstName, lt[i].LastName);

lt[i].FirstName = NULL;

lt[i].LastName = NULL;

lt[i].PhoneNumber = NULL;

q = 1;

break;

}

} //End for loop

if (q != 1)

{

printf(" \tThis person is not in the Phonebook ");

}

delCount++;

count--;

}//End function

//Display all phonebook entries

void Display()

{

int i;

printf(" \tYour contacts: ");

for (i = 0; i < count; i++)

{

if (lt[i].FirstName != NULL && lt[i].LastName != NULL)

{

printf(" \t\t%s %s: %s ", lt[i].FirstName, lt[i].LastName, lt[i].PhoneNumber);

}

}//End for loop

system("pause");

}//End function

//Sort entries alphabetically by last name.

void Alphabetical()

{

int i;

int j;

char temp[50][50];

printf(" \tYour contacts: ");

for (i = 0; i < count; i++)

{

for (j = i + 1; j < count; j++)

{

if (strcmp(lt[i].LastName, lt[j].LastName) > 0)

{

strcpy(temp[i], lt[i].LastName);

strcpy(lt[i].LastName, lt[j].LastName);

strcpy(lt[j].LastName, temp[i]);

}

}

}//End for loop

for (i = 0; i < count; i++)

printf(" \t\t%s %s: %s ", lt[i].FirstName, lt[i].LastName, lt[i].PhoneNumber);

system("pause");

}//End function

//Find phone number for given name

void Number()

{

int i;

int q = 0;

char fName[25];

char lName[25];

printf(" \tEnter their First Name: ");

scanf("%s", fName);

printf(" \tEnter their Last Name: ");

scanf("%s", lName);

for (i = 0; i < count; i++)

{

if (strcmp(lt[i].FirstName, fName) == 0 && strcmp(lt[i].LastName, lName) == 0)

{

printf(" \t\t%s %s's phone number is: %s ", lt[i].FirstName, lt[i].LastName, lt[i].PhoneNumber);

q = 1;

break;

}

}

if (q != 1)

{

printf(" This person is not in the Phonebook ");

}

system("pause");

}//End function

//Randomly select contact

void Random()

{

srand(time(NULL));

int iRandomNum;

iRandomNum = (rand() % count) + 1;

printf("\t\t%s %s: %s ", lt[iRandomNum].FirstName, lt[iRandomNum].LastName, lt[iRandomNum].PhoneNumber);

system("pause");

}//End function

//Delete everyone from phone book

void DeleteAll()

{

int i;

for (i = 0; i < count; i++)

{

do{

lt[i].FirstName = NULL;

lt[i].LastName = NULL;

lt[i].PhoneNumber = NULL;

break;

} while (i <= count);

}

printf(" \t\tAll contacts deleted ");

system("pause");

}//End function