Programming assignment (100 pts): You have worked very hard on your phonebook pr

ID: 3600102 • Letter: P

Question

Programming assignment (100 pts): You have worked very hard on your phonebook program for many weeks and it is becoming a popular application with all your friends. You decide you want to compete with facebook.com and the next upgrade of your phonebook software should make contact data accessible even if the user closes your application and returns to it at a later time.

Add additional functionality to your phonebook program from lab# 7. Make it possible for users to:

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.

If the user does not explicitly specify a path to the file, a default location of your choosing should be used.

This is my current code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

void ADD();
void Delete1();
void Display1();
void Alphabetical1();
void Number1();
void Random1();
void DeleteAll1();
typedef struct Phone_Book_List {
char *FName;
char *LName;
char *PhoneNumber1;
} list;

typedef struct Delete_Entry
{
char *FName;
char *LName;
} take;

//Pointer
list *lt1;
take *tk1;
//globally
int cnt = 0;
int delCnt = 0;
int main(void)

{
//Variables
int iSel;

do {
  printf(" PHONE BOOK: ");
  printf("1) ADD FRIEND ");
  printf("2) DELETE FRIEND ");
  printf("3) DISPLAY PHONE BOOK ");
  printf("4) SORT ALPHABETICALLY ");
  printf("5) FIND PHONE NUMBER ");
  printf("6) RANDOM CONTACT ");
  printf("7) DELETE ALL CONTACTS ");
  printf("8) EXIT ");
  printf("WHAT DO YOU WANT TO DO? ");

  scanf("%d", &iSel);
  switch (iSel) {

  case 1: //Add
   ADD();
   break;

  case 2: //Delete
   Delete1();
   break;

  case 3: //Display
   Display1();
   break;

  case 4: //Sort
   Alphabetical1();
   break;

  case 5: //Find
   Number1();
   break;

  case 6: //Random
   Random1();
   break;

  case 7: //Delete all
   DeleteAll1();
   break;

  case 8: //Quit
  break;

  default:
printf(" Invalid selection ");
  break;
  }

  }
  while (iSel != 8);

  free(tk1);
  free(lt1);
  tk1 = NULL;
  lt1 = NULL;
  return 0;
}

//FUNCTION
void ADD()
{
char *leftName;
if (cnt == 0)
  {
  lt1 = (list *) malloc ((cnt*25) + 25);
  }
else
  {
  lt1 = (list *) realloc (lt1, (cnt*50) + 50);
  }
if (lt1 == NULL)
  {
  printf("YOU CANNOT ADD MORE MEMORY ");
  }
else
{
  lt1[cnt].FName = (char *) malloc(sizeof(char)*15);
  lt1[cnt].LName = (char *) malloc(sizeof(char)*15);
  lt1[cnt].PhoneNumber1 = (char *) malloc(sizeof(char)*15);
  printf(" ENTER FIRST NAME: ");
  scanf("%s", lt1[cnt].FName);
  printf(" ENTER LAST NAME: ");
  scanf("%s", lt1[cnt].LName);
  printf(" ENTER PHONE NUMBER: ");
  scanf("%s", lt1[cnt].PhoneNumber1);
  printf(" CONTACT ADDED ");
}

cnt++;
}
//Deletes Contact
void Delete1()
{
int i;
int q = 0;
char *uName;

if (delCnt == 0)
{
  tk1 = (take *) malloc ((delCnt*25) + 25);
}

else
{
  tk1 = (take *) realloc (tk1, (delCnt*1) + 1);
}

if (tk1 == NULL)
{
printf("Out of memory can not Delete ");
}
else
{
   tk1[delCnt].FName = (char *) malloc(sizeof(char)*15);
   tk1[delCnt].LName = (char *) malloc(sizeof(char)*15);
   printf(" ENTER THEIR FIRST NAME: ");
   scanf("%s", tk1[delCnt].FName);
   printf(" ENTER THEIR LAST NAME: ");
   scanf("%s", tk1[delCnt].LName);
}

  for (i = 0; i < cnt; i++)
{
  if (lt1[i].FName == NULL && lt1[i].LName == NULL) continue;
  if (strcmp(lt1[i].FName, tk1[delCnt].FName) == 0 && strcmp(lt1[i].LName, tk1[delCnt].LName) == 0)
  {
   printf(" %s %s has been deleted ", lt1[i].FName, lt1[i].LName);
   lt1[i].FName = NULL;
   lt1[i].LName = NULL;
   lt1[i].PhoneNumber1 = NULL;
   q = 1;
  break;
  }
}

if (q != 1)
{
printf(" Contact not in the Phonebook ");
}

delCnt++;
cnt--;

}

void Display1()
{
int i;

printf(" CONTACTS: ");

for (i = 0; i < cnt; i++)
{
  if (lt1[i].FName != NULL && lt1[i].LName != NULL)
  {
   printf(" %s %s: %s ", lt1[i].FName, lt1[i].LName, lt1[i].PhoneNumber1);
  }
}

system("pause");
}

//Alphabetically
void Alphabetical1()
{
int i;
int j;
char temp[50][50];

printf(" CONTACTS: ");

for (i = 0; i < cnt; i++)
{
  for (j = i + 1; j < cnt; j++)
  {
  if (strcmp(lt1[i].LName, lt1[j].LName) > 0)
   {
   strcpy(temp[i], lt1[i].LName);
   strcpy(lt1[i].LName, lt1[j].LName);
   strcpy(lt1[j].LName, temp[i]);
   }
  }
}

for (i = 0; i < cnt; i++)
printf(" %s %s: %s ", lt1[i].FName, lt1[i].LName, lt1[i].PhoneNumber1);

system("pause");
}//End function
void Number1()
{
int i;
int q = 0;
char fName[25];
char lName[25];

printf(" Enter First Name: ");
scanf("%s", fName);
printf(" Enter Last Name: ");
scanf("%s", lName);

for (i = 0; i < cnt; i++)
{
  if (strcmp(lt1[i].FName, fName) == 0 && strcmp(lt1[i].LName, lName) == 0)
  {
   printf(" %s %s's PHONE NUMBER IS: %s ", lt1[i].FName, lt1[i].LName, lt1[i].PhoneNumber1);
   q = 1;
   break;
  }
}

if (q != 1)
{
printf(" Not in the Phonebook ");
}

system("pause");
}

void Random1()
{
srand(time(NULL));
int iRandomNum;

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

printf("%s %s: %s ", lt1[iRandomNum].FName, lt1[iRandomNum].LName, lt1[iRandomNum].PhoneNumber1);
system("pause");
}

void DeleteAll1()
{
int i;

  for (i = 0; i < cnt; i++)
{
  do{
  lt1[i].FName = NULL;
  lt1[i].LName = NULL;
  lt1[i].PhoneNumber1 = NULL;
  break;
  }
  while (i <= cnt);
}

printf(" ALL CONTACTS DELETED ");
system("pause"); }

Explanation / Answer

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

typedef struct Delete_Entry
{
char *FName;
char *LName;
} take;

//Pointer
list *lt1;
take *tk1;
//globally
int cnt = 0;
int delCnt = 0;
int main(void)

if (q != 1)
{
printf(" Contact not in the Phonebook ");
}

delCnt++;
cnt--;

}

void Display1()
{
int i;

printf(" CONTACTS: ");

for (i = 0; i < cnt; i++)
{
  if (lt1[i].FName != NULL && lt1[i].LName != NULL)
  {
   printf(" %s %s: %s ", lt1[i].FName, lt1[i].LName, lt1[i].PhoneNumber1);
  }
}

system("pause");
}

//Alphabetically
void Alphabetical1()
{
int i;
int j;
char temp[50][50];

printf(" CONTACTS: ");

for (i = 0; i < cnt; i++)
printf(" %s %s: %s ", lt1[i].FName, lt1[i].LName, lt1[i].PhoneNumber1);

system("pause");
}//End function
void Number1()
{
int i;
int q = 0;
char fName[25];
char lName[25];

printf(" Enter First Name: ");
scanf("%s", fName);
printf(" Enter Last Name: ");
scanf("%s", lName);

if (q != 1)
{
printf(" Not in the Phonebook ");
}

system("pause");
}

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