How Can I Write a Program For a Contact List Using Functions? (C++)

Question

A contact list is a place where you can store a specific contact with other associated information such as a phone number, email address, birthday, etc. Write a program that first takes as input an integer N that represents the number of word pairs in the list to follow. Word pairs consist of a name and a phone number (both strings). That list is followed by a name, and your program should output the phone number associated with that name.

Ex: If the input is:

3 Joe 123-5432 Linda 983-4123 Frank 867-5309

Frank

the output is:

867-5309

Your program must define and call the following function. The return value of GetPhoneNumber is the phone number associated with the specific contact name.

string GetPhoneNumber(vector<string> nameVec, vector<string> phoneNumberVec, string contactName)

Hint: Use two vectors: One for the string names, and the other for the string phone numbers.

Answer 1

using namespace std;

#include <iostream>

#include <vector>

#include <string>

#include <string.h>

typedef struct _TPhoneContactRec

{

string name;

string phoneNum;

} *TPhoneContactRec;

void InputPhoneRecs( vector<struct _TPhoneContactRec> & phoneContactVector , int N)

{

for (int iLoop=0; iLoop<N; iLoop++)

{

struct _TPhoneContactRec curPhoneContactRec;

cout << "Phone contact rec # " << (iLoop+1) << " of " << N << endl;

cout << "----------------------------------------------------------" << endl;

cout << "please input Name :>";

cin >> curPhoneContactRec.name;

cout << "please input phone # :>";

cin >> curPhoneContactRec.phoneNum;

phoneContactVector.push_back(curPhoneContactRec);

}

}

void DumpPhoneRecs( vector <struct _TPhoneContactRec> phoneRecVector, char * strMsg=NULL)

{

if (strMsg!=NULL)

{

cout << "*******************************************************" << endl;

cout << strMsg << endl;

}

cout << "**************************************************************" << endl;

int N = phoneRecVector.size();

cout << " Name Phone " << endl;

cout <<"----------------------------------------" << endl;

for (int iLoop=0; iLoop<N; iLoop++)

{

struct _TPhoneContactRec curPhoneContactRec;

curPhoneContactRec = phoneRecVector[iLoop];

cout << curPhoneContactRec.name << " " << curPhoneContactRec.phoneNum << endl;

}

}

typedef int (*CompareCallbackFuncPtr) (TPhoneContactRec phoneRec1, TPhoneContactRec phoneRec2);

ComparePhoneRecByName( TPhoneContactRec phoneRec1, TPhoneContactRec phoneRec2)

{

char name1[255];

char name2[255];

strcpy(name1,phoneRec1->name.c_str());

strcpy(name2,phoneRec2->name.c_str());

return(stricmp(name1,name2));

}

ComparePhoneRecByPhone( TPhoneContactRec phoneRec1, TPhoneContactRec phoneRec2)

{

char phone1[255];

char phone2[255];

strcpy(phone1,phoneRec1->phoneNum.c_str());

strcpy(phone2,phoneRec2->phoneNum.c_str());

return(strcmp(phone1,phone2));

}

int SearchMenu()

{

int iReturn=-1;

while ((iReturn<0) || (iReturn>3))

{

cout << "---------------------" << endl;

cout << "<1> SEARCH BY NAME " << endl;

cout << "<2> SEARCH BY PHONE " << endl;

cout << "<3> SHOW PHONE RECS " << endl;

cout << "----------------------" << endl;

cout <<" Input Selection or ZER0 to Quit :>";

cin >> iReturn;

}

return(iReturn);

}

int LinearSearch (vector <struct _TPhoneContactRec> phoneRecVector, TPhoneContactRec target, CompareCallbackFuncPtr compareFunc)

{

int N = phoneRecVector.size();

int iReturn=-1;

for (int iLoop=0; iLoop<N; iLoop++)

{

struct _TPhoneContactRec curPhoneRec = phoneRecVector[iLoop];

if (compareFunc(target,&curPhoneRec)==0)

{

iReturn = iLoop;

break;

}

}

return(iReturn);

}

int main()

{

int N;

cout << "How many ??? :>";

cin >> N;

vector<struct _TPhoneContactRec> phoneContactVector;

int iReturn=-1;

InputPhoneRecs(phoneContactVector,N);

//debugging only: you may comment it out

DumpPhoneRecs(phoneContactVector, (char*) "PHONE RECS INPUT");

struct _TPhoneContactRec targetPhoneRec;

while ((iReturn=SearchMenu())!=0)

{

switch (iReturn)

{

case 1:

{

cout << "Name? :>";

cin >>targetPhoneRec.name ;

int iIndexPos = LinearSearch(phoneContactVector,&targetPhoneRec,ComparePhoneRecByName);

if(iIndexPos>-1)

{

cout << phoneContactVector[iIndexPos].name << " " << phoneContactVector[iIndexPos].phoneNum << endl;

}

break;

}

case 2:

{

cout << "Phone # ???? :>";

cin >>targetPhoneRec.phoneNum;

int iIndexPos = LinearSearch(phoneContactVector,&targetPhoneRec,ComparePhoneRecByPhone);

if(iIndexPos>-1)

{

cout << phoneContactVector[iIndexPos].name << " " << phoneContactVector[iIndexPos].phoneNum << endl;

}

break;

}

case 3:

{

DumpPhoneRecs(phoneContactVector);

break;

}

} //switch

} //while

}