I have this problem that needs to be added to my work, and i have this so far of my problem. I need the function added and explained how you got to it. Here is the question then the program i have written so far.

Add a function to the Programming Challenge that allows the user to search the structure array for a particular customers account. It should accept part of the customers name as an argument then search for an account with a name that matches it. All accounts that match should be displayed. If no account matches, a message saying so should be displayed.

#include

#include

using namespace std;

struct account{

string userName;

string address;

string city;

string state;

string zip;

string telephone;

string date;

double balance;

string dateOfLastPay;

};

void showMainMenu(const unsigned);

void showModifyMenu();

void addAccount(account[], const unsigned, unsigned&);

void modifyAccount(account[], const unsigned);

void displayAccounts(account[], const unsigned);

void setName(account&);

void setAddress(account&);

void setCity(account&);

void setState(account&);

void setZIP(account&);

void setTelephone(account&);

void setDate(account&);

void setDateOfLastPay(account&);

void setBalance(account&);

string getOrdinal(const unsigned);

bool isEmpty(const string);

int main(){

const unsigned MAX = 10;

account customers[MAX];

unsigned firstAvailableIndex = 0;

int choice = 0;

do{

showMainMenu(firstAvailableIndex);

cout << "You choose: ";

cin >> choice;

cin.ignore();

if(choice == 1)

addAccount(customers, MAX, firstAvailableIndex);

else if(choice == 2)

modifyAccount(customers, firstAvailableIndex);

else if (choice == 3)

displayAccounts(customers, firstAvailableIndex);

else if(choice != 0){

cout << "No choice value, Enter a valid choice! ";

}

}

while(choice != 0);

cout << "Thank you for exploring my program.";

return 0;

}

void showMainMenu(const unsigned numCustomers){

cout << "1.) Add a new Account. ";

cout << "2.) Modify existing account. ";

cout << "3.) Display all the data stored. ";

cout << "0.) Exit. ";

cout << "(Current number of accounts: " << numCustomers << " )";

cout << endl;

}

void showModifyMenu(){

cout << "1.) Modify account user name. ";

cout << "2.) Modify account address. ";

cout << "3.) Modify account city location ";

cout << "4.) Modify account state location. ";

cout << "5.) Modify account ZIP code location. ";

cout << "6.) Modify account phone number. ";

cout << "7.) Modify account balance. ";

cout << "8.) Modify date of the last payment. ";

cout << "9.) Exit. ";

}

void addAccount(account customers[], const unsigned SIZE, unsigned& index){

if( index >= SIZE){

cout << "Array is full. ";

cout << "(Current number of account: " << index << " ) ";

return;

}

cout << "The info about " << (index + 1) << getOrdinal(index + 1) << "account, ";

setName (customers[index]);

setAddress (customers[index]);

setCity (customers[index]);

setState (customers[index]);

setZIP (customers[index]);

setTelephone (customers[index]);

setBalance (customers[index]);

setDateOfLastPay (customers[index]);

index ++;

cout << "Account number (" << index << ") was stored ";

}

void modifyAccount(account customers[],

const unsigned NUM_ACCOUNTS){

if(NUM_ACCOUNTS == 0){

cout << "Cannot modify any account. ";

cout << "Array is empty. ";

cout << "(Current number of accounts: " << NUM_ACCOUNTS << " ) ";

return;

}

int account = -1;

int choice = 0;

cout << "Enter the account number, you want to modify. ";

cout << " No 0 or negative numbers are allowed. ";

cout << "(Current number of accounts: " << NUM_ACCOUNTS << " ) ";

cout << endl;

cout << "Your account: ";

cin >> account;

while (account < 1 || account > NUM_ACCOUNTS){

cout << "NO 0 or negative numbers! ";

cout << "(Current number of accounts: " << NUM_ACCOUNTS << " ) ";

cout << "You chose: ";

cin >> account;

}

cout << "Choose your option, ";

account --;

do{

showModifyMenu();

cout << "Your choice: ";

cin >> choice;

cin.ignore();

if (choice == 1){

cout << "You chose the user name of ";

cout << (account + 1) << getOrdinal(account + 1) << " account, ";

cout << "Old value: " << customers[account].userName

<< endl;

cout << "Enter the new value, "; setName(customers[account]);

}

else if(choice == 2){

cout << "You chose the address of ";

cout << (account + 1) << getOrdinal (account + 1) << "account, ";

cout << "Old value: " << customers[account].address

<< endl;

cout << "Enter the new value, "; setAddress(customers[account]);

}

else if(choice == 3){

cout << "You chose the city of ";

cout << (account + 1) << getOrdinal (account + 1) << "account, ";

cout << "Old value: " << customers[account].city

<< endl;

cout << "Enter the new value, "; setCity(customers[account]);

}

else if(choice == 4){

cout << "You chose the state of ";

cout << (account + 1) << getOrdinal (account + 1) << "account, ";

cout << "Old value: " << customers[account].address

<< endl;

cout << "Enter the new value, "; setState(customers[account]);

}

else if(choice == 5){

cout << "You chose the ZIP code of ";

cout << (account + 1) << getOrdinal (account + 1) << "account, ";

cout << "Old value: " << customers[account].zip

<< endl;

cout << "Enter the new value, "; setZIP(customers[account]);

}

else if(choice == 6){

cout << "You chose the phone number of ";

cout << (account + 1) << getOrdinal (account + 1) << "account, ";

cout << "Old value: " << customers[account].telephone

<< endl;

cout << "Enter the new value, "; setTelephone(customers[account]);

}

else if(choice == 7){

cout << "You chose the balance of ";

cout << (account + 1) << getOrdinal (account + 1) << "account, ";

cout << "Old value: " << customers[account].balance

<< endl;

cout << "Enter the new value, "; setBalance(customers[account]);

}

else if(choice == 8){

cout << "You chose the last payment of ";

cout << (account + 1) << getOrdinal (account + 1) << "account, ";

cout << "Old value: " << customers[account].dateOfLastPay

<< endl;

cout << "Enter the new value, "; setDateOfLastPay(customers[account]);

}

else if(choice != 0){

cout << "Wrong value, enter a valid value! ";

}

}

while(choice != 0);

cout << "You will exit the modifcation mode. ";

}

void displayAccounts(account customers[], const unsigned NUM_ACCOUNTS){

if(NUM_ACCOUNTS == 0){

cout << "Array is empty. ";

cout << "(Current number of accounts: " << NUM_ACCOUNTS << " ) ";

return;

}

for(unsigned i = 0; i < NUM_ACCOUNTS; i++){

cout << "The info about " << (i + 1) << getOrdinal (i + 1) << " account, ";

cout << "User Name: " << customers[i].userName << endl;

cout << "Address: " << customers[i].address << endl;

cout << "City: " << customers[i].city << endl;

cout << "State: " << customers[i].state << endl;

cout << "ZIP code: " << customers[i].zip << endl;

cout << "Telephone: " << customers[i].telephone << endl;

cout << "Balance: " << customers[i].balance << endl;

cout << "Date of last Pay: " << customers[i].dateOfLastPay << endl;

if(i < (NUM_ACCOUNTS - 1))

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

}

cout << "================= ";

}

void setName(account& account){

cout << "User name: ";

getline(cin, account.userName);

while (isEmpty(account.userName)){

cout << "Name field cannot be empty! ";

cout << "User name: ";

getline(cin, account.userName);

}

}

void setAddress(account& account){

cout << "Address: ";

getline(cin, account.address);

while (isEmpty(account.address)){

cout << "Address field cannot be empty! ";

cout << "Address: ";

getline(cin, account.address);

}

}

void setCity(account& account){

cout << "City: ";

getline(cin, account.city);

while (isEmpty(account.city)){

cout << "City field cannot be empty! ";

cout << "City: ";

getline(cin, account.city);

}

}

void setState(account& account){

cout << "State: ";

getline(cin, account.state);

while (isEmpty(account.state)){

cout << "State field cannot be empty! ";

cout << "State: ";

getline(cin, account.state);

}

}

void setZIP(account& account){

cout << "ZIP code: ";

getline(cin, account.zip);

while (isEmpty(account.zip)){

cout << "ZIP code field cannot be empty! ";

cout << "ZIP code: ";

getline(cin, account.zip);

}

}

void setTelephone(account& account){

cout << "Phone Number: ";

getline(cin, account.telephone);

while (isEmpty(account.telephone)){

cout << "Phone number field cannot be empty! ";

cout << "Phone number: ";

getline(cin, account.telephone);

}

}

void setBalance(account& account){

cout << "Balance: ";

cin >> account.balance;

while (account.balance < 0){

cout << "Balance field cannot be negative! ";

cout << "Balance: ";

cin >> account.balance;

}

cin.ignore();

}

void setDateOfLastPay(account& account){

cout << "Date of last payment: ";

getline(cin, account.city);

while (isEmpty(account.dateOfLastPay)){

cout << "Date of last payment field cannot be empty! ";

cout << "Date of last payment: ";

getline(cin, account.dateOfLastPay);

}

}

bool isEmpty(const string str){

if (str.empty())

return true;

unsigned len = str.length();

for(unsigned i = 0; i < len; i++){

if(!isspace(str[i]))

return false;

}

return true;

}

string getOrdinal(const unsigned num){

unsigned parser = num; 100;

if (parser < 20 && parser > 10){

return "th";

}

parser = num; 10;

if(parser == 1){

return "st";

}

else if(parser == 2){

return "nd";

}

else if(parser == 3){

return "rd";

}

else {

return "th";

}

}