Question

C++, entry level no pointers or vectors.

Write a class called Person that has two data members - a string variable called name and a double variable called age. It should have a constructor that takes two values and uses them to initialize the data members. It should have get methods for both data members (getName and getAge), but doesn't need any set methods.

Write a separate function (not part of the Person class) called stdDev that takes two parameters - an array of Person objects and the size of the array - and returns the standard deviation of all the ages (the population standard deviation that uses a denominator of N, not the sample standard deviation, which uses a different denominator).

The files must be named Person.hpp, Person.cpp and stdDev.cpp. and main method for testing

Answer 1

Answer Source code: Person.h: # include<iostream> # include<string> using namespace std; #lfndef PERSON INCLUDE #define PERSON INCLUDE class Person public: string name: double age; public: Person () age-0: Person (string a,double b void getdetails ); fendi f

Person.cpp: # include«iostream> # include<string> #include "person.h" using namespace std: Person: : Person (string x,double y) name=x; age=y; void Person::getdetails () cout<<" nName: "<<name coutくく"\nAge : "<< age ;

stdDev.cpp # include< iostream> # include<string> #include "Persoh.h" using namespace std double stdDev (Person g[2],int sz) int sum 0 double mean, standardDeviation 0.0 cout<<" \nPerson details:" for (int 1-1;1<=sz; 1++) g [il.getdetails ); sum sumtg [il.age; mean-sum/sz; standardDeviation pow (g [k].age mean, 2) return sqrt (standardDeviation / sz); int main() int n string x; double y: Person g[5; cout<<" \nEnter number of person: "; cin>>n;

Sample Output rumal documents visual studio DebuglProject.exe use roie ro Enter number of person 5 Enter person name Sameera 25 Enter person name Uino 23 Enter person name:Anu 23 Enter person nane Sharmi 25 Enter person name Ilamathi 25 Person details: Name: Sameera Age: 2!5 Name: Uino Age: 23 Name Anu Age 23 Name: Sharmi Age: 2!5 Nae Ilamathi Age: 2!5 Standard deviation 1 Press any key to continue - - -

Program code:

Person.h:

#include<iostream>

#include<string>

using namespace std;

#ifndef PERSON_INCLUDE

#define PERSON_INCLUDE

class Person

{

   public:

        string name;

        double age;

public:

     Person()

     {

          age=0;

     }

        Person(string a,double b );

        void getdetails();

};

#endif

Person.cpp:

#include<iostream>

#include<string>

#include "Person.h"

using namespace std;

Person::Person(string x,double y)

{

     name=x;

     age=y;

}

void Person::getdetails()

{

     cout<<"\nName: "<<name;

     cout<<"\nAge: "<<age;

}

stdDev.cpp:

#include<iostream>

#include<string>

#include "Person.h"

using namespace std;

double stdDev(Person g[2],int sz)

{

     int sum=0;

     double mean, standardDeviation = 0.0;

     cout<<"\nPerson details:";

     for(int i=1;i<=sz;i++)

     {

        g[i].getdetails();

        sum=sum+g[i].age;

     }

     mean=sum/sz;

     for(int k = 1; k <= sz; ++k)

        standardDeviation += pow(g[k].age - mean, 2);

     return sqrt(standardDeviation / sz);

}

int main()

{

     int n;

     string x;

     double y;

     Person g[5];

     cout<<"\nEnter number of person: ";

     cin>>n;

     for(int i=1;i<=n;i++)

     {

          cout<<"\nEnter person name:";

          cin>>x;

          cout<"\nEnter Person age: ";

          cin>>y;

         g[i]=Person(x,y);

     }

     cout<<"\nStandard deviation: "<<stdDev(g,n)<<endl;

     system("pause");

     return 0;

}