Classes/Streams - Marketing software In this programming assignment, you’ll iden
ID: 3872837 • Letter: C
Question
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:
int main(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;//indicates error
}
Get User Input (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
Finished reading file.
Enterl ower range of age:24
Enter upper range of age:30
Enter gender (male,female,orany):any
Enter lower range of yearly income:43000
Enter upper range of yearly income:57000
Number of potential customers=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;
}
Explanation / Answer
#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,String gender,int yearlyIncome); // 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,String gender,int yearlyIncome) { // FIXME Also set gender and yearly income
this->age = a;
this->gender = gender;
this->yearlyIncome = yearlyIncome;
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;
}
vector<Person> GetPeopleWithSpecificGender(vector<Person> p,String gen){
Vector<Person> pa;
for(int i=0;i<p.size();++i){
if(p.at(i).GetGender()==gen)
pa.push_back(p.at(i));
}
return pa;
}
vector<Person> GetPeopleInIncomeRange(vector<Person> ppl, int lowerRange, int upperRange) {
unsigned int i = 0;
vector<Person> pplInIncomeRange;
int in = 0;
for (i = 0; i < ppl.size(); ++i) {
in = ppl.at(i).GetIncome();
if ((in >= lowerRange) && (in <= 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);
ptntlCstmrs=GetPeopleWithSpecificGender(ptntlCstmrs,gender);
ptntlCstmrs=GetPeopleInIncomeRange(ptntlCstmrs,yILowerRange,yIUpperRange);
cout << " Number of potential customers = "<<ptntlCstmrs.size() << endl;
return 0;
}