Classes/Streams - Marketing software ( Starter code is provided in the end) In t

ID: 3683985 • Letter: C

Question

Classes/Streams - Marketing software ( Starter code is provided in the end)

In this programming assignment, you’ll identify the number of potential customers for a business. The starter program outputs the number of potential customers in a userentered age range given a file with people’s data.

1. Move the class Person to the separate files: person.h and person.cpp. Make sure you can still compile with separate files.

2. During file reading, the program isn’t storing the gender or yearly income of the people. Instead, the default values are being printed. Fix the program to correctly set the data read from file. The regions of the code that need to be fixed are marked with: “FIXME Also set gender and yearly income”

3. Allow the user to select the potential customer’s gender: “male”, “female”, or “any”. The program should now output only potential customers with the userspecified gender and age. Update the GetUserInput function to prompt the user and store the user’s gender selection. Also, create a function GetPeopleWithSpecificGender that returns only people with the userspecified gender. Debugging suggestion: Use a function to print main’s vector of Persons so that you can see who is in the vector after each function call. This technique may help debug the newly created function GetPeopleWithSpecificGender.

4. In addition to age and gender, allow the user to select the lower and upper range of a customer’s yearly income. Update the GetUserInput function to prompt the user and store the user’s specified range. Also, create a function GetPeopleInIncomeRange that returns only people with the userspecified yearly income

The main should now look like the following code:

int main(int argc, char* argv[]){

vector<people> people ;

bool hadError = false ;

int ageLowerRange = 0 ;

int ageUpperRange = 0 ;

string gender = " " ;

int yILowerRange = 0 ;

int yIUpperRange = 0 ;

hadError = ReadPeopleFromFile ( argc, argv, people) ;

if( hadError ) {

return 1; //indicateserror

}

GetUserInput( ageLowerRange, ageUpperRange, gender, yILowerRange, yIUpperRange ) ;
people = GetPeopleInAgeRange( people, ageLowerRange, ageUpperRange ) ;
people = GetPeopleWithSpecificGender( people, gender ) ;
people = GetPeopleInIncomeRange( people, yILowerRange, yIUpperRange ) ;
cout << " Number of potential customers = " << people.size( ) << endl;
return0;
}

Here is an example program execution with people.txt (user input is highlighted here for clarity):

Opening file people.txt.

Age = 20, gender = male, yearly income = 25000

Age = 25, gender = male, yearly income = 45000

Age = 23, gender = male, yearly income = 30000

Age = 16, gender = male, yearly income = 7000

Age = 30, gender = male, yearly income = 55000

Age = 22, gender = female, yearly income = 27000

Age = 26, gender = female, yearly income = 44000

Age = 21, gender = female, yearly income = 37000

Age = 18, gender = female, yearly income = 17000

Age = 29, gender = female, yearly income = 62000

Finished reading file.

Enter lower range of age: 24

Enter upper range of age: 30

Enter gender (male, female, or any): any

Enter lower range of yearly income: 43000

Enter upper range of yearly income: 57000

Number of potential customers = 3

here is the starter quiz

#include <iostream>
#include <fstream>
#include <vector>
#include <string>
using namespace std;

// Define a Person class, including age, gender, and yearlyIncome.
class Person {
public:
Person();
void Print();
void SetData(int a); // FIXME Also set gender and yearly income
int GetAge();
private:
int age;
string gender;
int yearlyIncome;
};

// Constructor for the Person class.
Person::Person() {
age = 0;
gender = "default";
yearlyIncome = 0;
return;
}

// Print the Person class.
void Person::Print() {
cout << "Age = " << this->age
<< ", gender = " << this->gender
<< ", yearly income = " << this->yearlyIncome
<< endl;
return;
}

// Set the age, gender, and yearlyIncome of a Person.
void Person::SetData(int a) { // FIXME Also set gender and yearly income
this->age = a;
return;
}

// Get the age of a Person.
int Person::GetAge() {
return this->age;
}

// Get a filename from program arguments, then make a Person for each line in the file.
bool ReadPeopleFromFile(int argc, char* argv[], vector<Person> &people) {
Person tmpPrsn;
ifstream inFS;
int tmpAge = 0;
string tmpGender = "";
int tmpYI = 0;

if (argc != 2) {
cout << " Usage: [EXECUTABLE FILE] [TEXT DATA FILE], e.g. myprog.exe dev_people.txt" << endl;
return true; // indicates error
}

cout << "Opening file " << argv[1] << ". ";
inFS.open(argv[1]); // Try to open file
if (!inFS.is_open()) {
cout << "Could not open file " << argv[1] << ". ";
return true; // indicates error
}

while (!inFS.eof()) {
inFS >> tmpAge;
inFS >> tmpGender;
inFS >> tmpYI;
tmpPrsn.SetData(tmpAge); // FIXME Also set gender and yearly income
tmpPrsn.Print();
people.push_back(tmpPrsn);
}
inFS.close();
cout << "Finished reading file." << endl;

return false; // indicates no error
}

// Ask user to enter age range.
void GetUserInput(int &ageLowerRange, int&ageUpperRange) {
cout<<" Enter lower range of age: ";
cin >> ageLowerRange;

cout << "Enter upper range of age: ";
cin >> ageUpperRange;

return;
}

// Return people within the given age range.
vector<Person> GetPeopleInAgeRange(vector<Person> ppl, int lowerRange, int upperRange) {
unsigned int i = 0;

vector<Person> pplInAgeRange;
int age = 0;
for (i = 0; i < ppl.size(); ++i) {
age = ppl.at(i).GetAge();
if ((age >= lowerRange) && (age <= upperRange)) {
pplInAgeRange.push_back(ppl.at(i));
}
}

return pplInAgeRange;
}

int main(int argc, char* argv[]) {
vector<Person> ptntlCstmrs;
bool hadError = false;
int ageLowerRange = 0;
int ageUpperRange = 0;

hadError = ReadPeopleFromFile(argc, argv, ptntlCstmrs);
if( hadError ) {
return 1; // indicates error
}

GetUserInput(ageLowerRange, ageUpperRange);
ptntlCstmrs = GetPeopleInAgeRange(ptntlCstmrs, ageLowerRange, ageUpperRange);

// FIXME Add the function GetPeopleWithSpecificGender
//FIXME Addthefunction GetPeopleInIncomeRange

cout << " Number of potential customers = "<<ptntlCstmrs.size() << endl;

return 0;
}

Here is a copy of my code. Can anyone show me how to fix it and what to do? (C++)

#include <iostream>
#include <fstream>
#include <vector>
#include <string>
using namespace std;

// Define a Person class, including age, gender, and yearlyIncome.
class Person {
public:
Person();
void Print();
void SetData(int a); // FIXME Also set gender and yearly income
int GetAge();
void setGender(string gender);
void setIncome( int income);

private:
int age;
string gender;
int yearlyIncome;
};

// Constructor for the Person class.
Person::Person() {
age = 0;
gender = "default";
yearlyIncome = 0;
return;
}

// Print the Person class.
void Person::Print() {
cout << "Age = " << this->age
<< ", gender = " << this->gender
<< ", yearly income = " << this->yearlyIncome
<< endl;
return;
}

// Set the age, gender, and yearlyIncome of a Person.
void Person::SetData(int a) { // FIXME Also set gender and yearly income
this->age = a;
return;
}
string Person::setGender(string gen){
   this->gender = gen;
   return;
}
int Person::getYearlyIncome() {
   this->yearlyIncome = salary;
   return;
}
void Person::setIncome(int income) {
   this->yearlyIncome = income;
   return;
}

// Get the age of a Person.
int Person::GetAge() {
return this->age;
}
void Person::setAge(int a) {
   this->age = age;
   return;
}

//Return people within the given gender.
vector<Person> GetPeopleInAgeRange(vector<Person> ppl, string gender) {
   unsigned int i = 0;

   vector<Person> pplWithGender;
   string gen;
   for (i = 0; i < ppl.size(); ++i) {
       gen = ppl.at(i).getGender();
       if (gen == gender) {
           pplWithGender.push_back(ppl.at(i));
       }
   }

   return pplWithGender;
}

//Return people within the given gender.
vector<Person> GetPeopleInIncomeRange(vector<Person> ppl, int lowerRange, int upperRange) {
   unsigned int i = 0;

   vector<Person> pplWithinIncomeRange;
   int salary;
   for (i = 0; i < ppl.size(); ++i) {
       salary = ppl.at(i).GetYearlyIncome();
       if ((salary > lowerRange) && (salary < upperRange)) {
           pplWithinIncomeRange.push_back(ppl.at(i));
       }
   }

   return pplWithinIncomeRange;
}

int main(int argc, char* argv[]) {
vector<Person> ptntlCstmrs;
vector<Person> peopleInRange;
bool hadError = false;
int ageLowerRange = 0;
int ageUpperRange = 0;

hadError = ReadPeopleFromFile(argc, argv, ptntlCstmrs);
if( hadError ) {
return 1; // indicates error
}

GetUserInput(ageLowerRange, ageUpperRange);
ptntlCstmrs = GetPeopleInAgeRange(ptntlCstmrs, ageLowerRange, ageUpperRange);
peopleWithGender = GetPeopleWithSpecificGender(ptntlCstmrs, "male");
peopleWithIncomeRange = GetPeopleInIncomeRange(ptntlCstmrs, 10000, 30000);

   cout << " Number of potential customers =" << peopleInRange.size() << endl;
   cout << " Number of potential customers with gender male =" << peopeWithGender.size() << endl;
   cout << " Number of potential customers with income range 10000 to 30000 =" << peopleWithInIncomeRange.size() << endl;

   return 0;
}

Explanation / Answer