****Assignment Classes/Streams - Marketing software In this programming assignme
ID: 3874797 • Letter: #
Question
****Assignment
Classes/Streams - Marketing software
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:
intmain(intargc,char*argv[]){ vector<Person>people; boolhadError=false; intageLowerRange=0; intageUpperRange=0; stringgender=""; intyILowerRange=0; intyIUpperRange=0;
hadError=ReadPeopleFromFile(argc,argv,people); if(hadError){
return1;//indicateserror }
GetUserInput(ageLowerRange,ageUpperRange,gender,yILowerRange, yIUpperRange);
people=GetPeopleInAgeRange(people,ageLowerRange,ageUpperRange); people=GetPeopleWithSpecificGender(people,gender); people=GetPeopleInIncomeRange(people,yILowerRange,yIUpperRange);
cout<<" Numberofpotentialcustomers="<<people.size()<<endl;
return0; }
Here is an example program execution with people.txt (user input is highlighted here for clarity):
Openingfilepeople.txt. Age=20,gender=male,yearlyincome=25000 Age=25,gender=male,yearlyincome=45000 Age=23,gender=male,yearlyincome=30000 Age=16,gender=male,yearlyincome=7000 Age=30,gender=male,yearlyincome=55000 Age=22,gender=female,yearlyincome=27000 Age=26,gender=female,yearlyincome=44000 Age=21,gender=female,yearlyincome=37000 Age=18,gender=female,yearlyincome=17000 Age=29,gender=female,yearlyincome=62000
Finishedreadingfile.
Enterlowerrangeofage:24 Enterupperrangeofage:30 Entergender(male,female,orany):any Enterlowerrangeofyearlyincome:43000 Enterupperrangeofyearlyincome:57000
Numberofpotentialcustomers=3
*****Starter code
#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;
}
****Use this data to complete the programming assignment for this topic.
Explanation / Answer
File Person.h
#include <string>
using namespace std;
// Define a Person class, including age, gender, and yearlyIncome.
class Person {
public:
Person();
void Print();
void SetData(int a, string g, int yin); //Member function to set gender and yearly income as well along with age
int GetAge();
string GetGender(); // Newly added function to get gender of a person
int GetYearlyIncome(); // Newly added function to get yearly income of a person
private:
int age;
string gender;
int yearlyIncome;
};
****************************************************end of file
File Person.cpp
#include <iostream>
#include "Person.h"
// 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;
}
// Updated function to Set the age, gender, and yearlyIncome of a Person.
void Person::SetData(int a,string g,int yin)
{
this->age = a;
this->gender = g;
this->yearlyIncome = yin;
return;
}
// Get the age of a Person.
int Person::GetAge() {
return this->age;
}
// New member function added to Get the gender of a Person.
string Person::GetGender() {
return this->gender;
}
// New member function added to Get the yearly income of a Person.
int Person::GetYearlyIncome() {
return this->yearlyIncome;
}
******************end of file
main.cpp
#include <iostream>
#include <string>
#include <fstream>
#include <vector>
#include "Person.h"
using namespace std;
// 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,tmpGender,tmpYI); //Updated member function call to set gender,age
//and yearly income of a person
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, string &gender, int &yIncomeLowerRange, int &yIncomeUpperRange) {
cout<<" Enter lower range of age: ";
cin >> ageLowerRange;
cout << "Enter upper range of age: ";
cin >> ageUpperRange;
cout << "Enter gender: ";
cin >> gender;
cout << "Enter lower range of yearly Income: ";
cin >> yIncomeLowerRange;
cout << "Enter upper range of yearly Income: ";
cin >> yIncomeUpperRange;
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;
}
// Return people with the given gender.
vector<Person> GetPeopleWithSpecificGender(vector<Person> ppl, string userGender)
{
unsigned int i = 0;
/* If the user specified gender is any, then all the customers are selected as potential irrespection of male or female */
if(userGender == "any")
return ppl;
else
{
/* If the customer's gender is matching the user specified gender then, the person is selected as potential customer */
vector<Person> pplForGender;
string gender = "";
for (i = 0; i < ppl.size(); ++i) {
gender = ppl.at(i).GetGender();
if ( gender == userGender) {
pplForGender.push_back(ppl.at(i));
}
}
return pplForGender;
}
}
// Return people within the user specified yearly income range.
vector<Person> GetPeopleInIncomeRange(vector<Person> ppl, int lowerRange, int upperRange) {
unsigned int i = 0;
vector<Person> pplInIncomeRange;
int yearlyIncome = 0;
for (i = 0; i < ppl.size(); ++i) {
yearlyIncome = ppl.at(i).GetYearlyIncome();
if ((yearlyIncome >= lowerRange) && (yearlyIncome <= upperRange)) {
pplInIncomeRange.push_back(ppl.at(i));
}
}
return pplInIncomeRange;
}
int main(int argc, char* argv[]) {
vector<Person> ptntlCstmrs;
bool hadError = false;
int ageLowerRange = 0;
int ageUpperRange = 0;
string gender = "";
int yILowerRange = 0;
int yIUpperRange = 0;
hadError = ReadPeopleFromFile(argc, argv, ptntlCstmrs);
if( hadError ) {
return 1; // indicates error
}
GetUserInput(ageLowerRange, ageUpperRange,gender,yILowerRange, yIUpperRange);
ptntlCstmrs = GetPeopleInAgeRange(ptntlCstmrs, ageLowerRange, ageUpperRange);
ptntlCstmrs=GetPeopleWithSpecificGender(ptntlCstmrs,gender);
ptntlCstmrs=GetPeopleInIncomeRange(ptntlCstmrs,yILowerRange,yIUpperRange);
cout << " Number of potential customers = "<<ptntlCstmrs.size() << endl;
return 0;
}
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