Add additional functionality to your phonebook program from lab# 6. Make it possible for users to:

1) Alphabetically sort the list of entries by name (first or last).

2) Find a phone number for a given name.

3) Randomly select a friend from the phonebook for you to call.

4) Delete everyone from the phonebook at the same time.

This is my existing code for lab 6, can someone add the additional functions please.

#include #include #include

//Declarations typedef struct entry { char fName[15]; char lName[15]; char phone[15]; }entry;

void addContact(entry*,int*); void delContact(entry*,int*); void showBook(entry*,int*);

//Main Function main() { int selection = 0; int entryNum = 0; entry *phoneBook; phoneBook = (entry*)malloc(sizeof(entry)); do { printf(" Phonebook Menu "); printf("\t(1)Add Contact "); printf("\t(2)Delete Contact "); printf("\t(3)Show Phonebook "); printf("\t(0)Exit "); printf("\tPlease Choose an Option: "); scanf("%d",&selection); switch(selection) { case 1: { //Adding Contact printf("\tNow Adding Contact "); entryNum++; addContact(phoneBook,&entryNum); break; } case 2: { //Deleting Contact printf("\tNow Deleting Contact "); delContact(phoneBook,&entryNum); break; } case 3: { //Showing Phonebook printf("\tNow Showing Phonebook "); printf("\t\tCONTACTS "); showBook(phoneBook,&entryNum); break; } case 0: { //Exit printf("\tThank You, Goodbye!"); free(phoneBook); break; } default: { //Invalid Option printf("\tNot A Valid Option! "); printf("\tPlease Try Again! "); break; } } } while (selection!=0); } void addContact(entry*phoneBook,int * entryNum) { if (*entryNum==0) { phoneBook = (entry*)realloc(phoneBook, (sizeof(entry)*2)); } else if (*entryNum>0) { phoneBook = (entry*)realloc(phoneBook, (sizeof(entry)*(*entryNum))+sizeof(entry)); } if(phoneBook!=NULL) { printf("Entry Number:%d ",*entryNum); printf(" First Name:"); scanf("%s",phoneBook[*entryNum].fName); printf(" Last Name:"); scanf("%s",phoneBook[*entryNum].lName); printf(" Phone Number (Format: xxx-xxxx):"); scanf("%s",phoneBook[*entryNum].phone); } else { printf(" NOT ENOUGH MEMORY!"); } } void delContact(entry*phoneBook,int * entryNum) { int num; int delNum; char tempFName[15]={'\0'}; char tempLName[15]={'\0'}; char tempPhone[15]={'\0'}; int selection=0; printf(" First Name:"); scanf("%s",tempFName); printf(" Last Name:"); scanf("%s",tempLName); for(num=0;num<=*entryNum+1;num++) { if (strcmp(tempFName,phoneBook[num].fName)==0&&strcmp(tempLName,phoneBook[num].lName)==0) { //Deleting contact delNum=num; printf(" Delete Entry Number:%d ",num); printf("First Name:\t%s ",phoneBook[num].fName); printf("Last Name:\t%s ",phoneBook[num].lName); printf("Phone Number:\t%s ",phoneBook[num].phone); printf("\tIS THIS CORRECT? "); printf("\t\t(1)Yes "); printf("\t\t(2)No "); scanf("%d",&selection); switch(selection) { case 1: { //Shifting all entries up after an entry is deleted for(num=delNum+1;num<=*entryNum+1;num++) { strcpy(phoneBook[num-1].fName,phoneBook[num].fName); strcpy(phoneBook[num-1].lName,phoneBook[num].lName); strcpy(phoneBook[num-1].phone,phoneBook[num].phone); } *entryNum=*entryNum-1; printf("\tContact Deleted! "); if (*entryNum!=0) { phoneBook = (entry*)realloc(phoneBook, (sizeof(entry)*(*entryNum+1))); } else if (entryNum>0) { phoneBook = (entry*)realloc(phoneBook, 2*(sizeof(entry))); } break; } case 2: { printf("Deletion Cancelled!"); break; } } break; } else if (num>*entryNum) { printf("No matching entry found!"); } } } //Showing Phonebook void showBook(entry*phoneBook,int* entryNum) { int num; for (num=1;num<=*entryNum;num++) { printf(" Entry Number:\t%d ",num); printf("\tFirst Name:\t%s ",phoneBook[num].fName); printf("\tLast Name:\t%s ",phoneBook[num].lName); printf("\tPhone Number:\t%s ",phoneBook[num].phone); } }