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                                                                                        “Baby names and birth weights”

Introduction

Babies are weighed soon after birth and this birth weight is recorded as part of a baby’s medical record. A low birth weight indicates increased risk for complications and such babies are given specialized care until they gain weight. Public health agencies, such as the Centers for Disease Control and Prevention (CDC) in the United States, keep records of births and birth weights. In this project you will write principled object-oriented C++ code to read a data file recording birth information and answer questions based on this data.

Objective

You are given data in text files - each line in a text file is a baby girl’s first name followed by her birth weight in grams (an integer). The text file could contain a large number of such lines. Write code to answer the following questions:

- How many births are recorded in the data file?

- How many babies have a given first name?

- How many babies are born with a low birth weight (less than 2,500 grams)?

- Which baby name is the most popular?

The code

You are given “skeleton” code with many blank spaces. Your assignment is to fill in the missing parts so that the code is complete and works properly. The code is in three files:

- main.cpp contains the main function and a set of unit tests, implemented using assert statements - each assert statement compares the output of your code with the expected correct answer. Since the provided code is only a template, all the tests will fail immediately with runtime errors. As you add functionality and fix any bugs that may arise, the tests will be able to get further and further. Do not edit this main.cpp file.

- Baby.h contains code for a “Baby” data class. This class is incomplete and you should complete it.

- MedicalRecord.h contains a class whose methods can return answers to the questions asked in this project. You can use (dynamic) arrays but not any of the STL containers (such as std::vector). This class is incomplete and you should complete it.

Hints

MedicalRecord.h will require the use of an array-based data structure of Baby objects. Note that private data members are also incomplete. Feel free to add private member variables to both MedicalRecord.h and Baby.h as you need. There is more than one way to solve this problem!

In summary, do the following:

- Fill in the missing blanks in the skeleton code. Test your progress with the test programs or critic tool. Push your changes to GitHub at regular intervals.

- Check that your code works one last time.

main.cpp contains

#include <iostream>
#include <fstream>
#include <string>
#include <cassert>

#include "MedicalRecord.h"
#include "Baby.h"

using namespace std;


int main() {
        try {
                {
                        // test only the Baby class
                        Baby babyTest("Testname", 1000);
                        assert(babyTest.getName() == "Testname");
                        assert(babyTest.getWeight() == 1000);
                }

                {   // test full code with a small data file
                        MedicalRecord MR;
                        MR.buildMedicalRecordfromDatafile("baby_data_small.txt"); // build a medical record from the file of baby names and weights\

                        int nBirths = MR.numberOfBirths();
                        cout << "Number of births: " << nBirths << endl;
                        assert(nBirths == 10);

                        int nEmma = MR.numberOfBabiesWithName("Emma");
                        cout << "Number of babies with name Emma: " << nEmma << endl;
                        assert(nEmma == 2);

                        int nLow = MR.numberOfBabiesWithLowBirthWeight();
                        cout << "Number of babies with low birth weight: " << nLow << endl;
                        assert(nLow == 2);

                        string mostPopularName = MR.mostPopularName();
                        cout << "Most popular baby name: " << mostPopularName << endl;
                        assert (mostPopularName == "Sophia");
                }

                {   // test full code with a large data file
                        MedicalRecord MR;
                        MR.buildMedicalRecordfromDatafile("baby_data_large.txt"); // build a medical record from the file of baby names and weights\

                        int nBirths = MR.numberOfBirths();
                        cout << "Number of births: " << nBirths << endl;
                        assert (nBirths == 199604);

                        int nEva = MR.numberOfBabiesWithName("Eva");
                        cout << "Number of babies with name Eva: " << nEva << endl;
                        assert (nEva == 566);

                        int nLow = MR.numberOfBabiesWithLowBirthWeight();
                        cout << "Number of babies with low birth weight: " << nLow << endl;
                        assert (nLow == 15980);

                        string mostPopularName = MR.mostPopularName();
                        cout << "Most popular baby name: " << mostPopularName << endl;
                        assert (mostPopularName == "Emma");
                }
        }
        catch (exception &e) {
                cout << e.what() << endl;
        }

        // system("pause");
}

Baby.h contains

#pragma once
#include <string>

using namespace std;

// class that contains information related to a single birth or baby name
class Baby {
public:
        Baby() {  // default constructor
        };

        Baby(string s, int w) { // constructor
                // TO BE COMPLETED
        }

        // a "getter" method
        int getWeight() {
                return -1; // TO BE COMPLETED
        }

        // a "getter" method
        string getName() {
                return "COMPLETE ME"; // TO BE COMPLETED
        }

private:
        string name;
        int weight;
};

MedicalRecord.h contains

#pragma once
#include <string>
#include <stdexcept>

#include "Baby.h"

using namespace std;

class MedicalRecord {
public:
        // default constructor
        MedicalRecord() {
                // TO BE COMPLETED
        }

        // destructor
        ~MedicalRecord() {
                // TO BE COMPLETED
        }

        // Load information from a text file with the given filename.
        void buildMedicalRecordfromDatafile(string filename) {
                ifstream myfile(filename);

                if (myfile.is_open()) {
                        cout << "Successfully opened file " << filename << endl;
                        string name;
                        int weight;
                        while (myfile >> name >> weight) {
                                // cout << name << " " << weight << endl;
                                Baby b(name, weight);
                                addEntry(b);
                        }
                        myfile.close();
                }
                else
                        throw invalid_argument("Could not open file " + filename);
        }

        // return the most frequently appearing name in the text file
        string mostPopularName() {
                return "COMPLETE ME"; // TO BE COMPLETED
        }

        // return the number of baby records loaded from the text file
        int numberOfBirths() {
                return -1; // TO BE COMPLETED
        }

        // return the number of babies who had birth weight < 2500 grams
        int numberOfBabiesWithLowBirthWeight() {
                return -1; // TO BE COMPLETED
        }

        // return the number of babies who have the name contained in string s
        int numberOfBabiesWithName(string s) {
                return -1; // TO BE COMPLETED
        }

private:
        // update the data structure with information contained in Baby object
        void addEntry(Baby b) {
                // TO BE COMPLETED
        }

        // Add private member variables for your data structure along with any 
        // other variables required to implement the public member functions

};

baby_data_small.txt contains

Sophia  4435
Emma  3561
Ava  2918
Sophia  3765
Mia  2204
Sophia  2749
Lourdes  3981
Sophia  2617
Olivia  4352
Emma  840

baby_data_large.txt contains

Grace  3385
Callie  2524
Presley  3396
Samantha  4455
Samantha  2662
Charleigh  4033
Luna  3122
Bria  3593
Lilah  2520
Madalyn  2838
Justice  3800
Grace  3284
Dakota  3296
Malaysia  3647
Gabriella  4020
Jasmin  3499
Allison  4193
Emma  2710
Maya  4216
Audrina  3368
Hazel  2780
Ava  4474
Lana  2717
Destiny  2952
Angelique  3972
Sophie  3396
Isabella  3011
Giavanna  4203
Lindsey  4420
Riley  4062
Francesca  3870
Harper  4130
Brynlee  2603
Chloe  3437
Catherine  3825
Ryann  3058
Evangeline  4232
Isla  3861
Audrey  2789
Penelope  4091
Lily  2630
Lyla  2086
Iris  3154
Morgan  3556
Harley  2974
Rosalie  2619
Harlow  2559
Faith  3976
Alessandra  2997
Gabriella  4060
Brooke  4351
Journey  3708
Emilia  4440
Meadow  3038
Athena  2538
Lily  3069
Brynlee  3161
Charlotte  2906
Hailey  2810
Rosie  3414
Allison  3182
Izabella  3302
Mia  3175
Nevaeh  3323
Nevaeh  1638
Juliette  4183
Isabella  3594
Claire  2236
Maryam  2509
Sage  3656
Sophia  2541
Lauryn  852
Zoey  3524
Kiara  4094
Paisley  4235
Adelyn  3205
Genesis  2919
Melody  2554
Serena  3399
Naomi  2812
Ava  2950
Emery  2802
Viviana  3198
Stella  2919
Jamie  4344
Addison  2886
Mia  4141
Jordan  3059
Lauren  2935
Lexie  4047
Chloe  2964
Emily  3003
Olivia  3761
Sofia  3388
Emilia  3588
Kaylee  3394
Kassidy  2505
Rachel  1828
Jazmine  4270
Baylee  3165
Lena  2395
Zelda  973
Isabella  3082
Sofia  4057
Nevaeh  3951
Alexis  4493
Sarah  3371
Delilah  3017
Arianna  4319
Amari  4375
Gianna  2629
Sarah  4095
Olivia  3163
Lauren  2546
Clara  3221
Daniella  3767
Carmen  2855
Brooklyn  3897
Nevaeh  2744
Aliyah  2529
Mila  3702
Kendall  4334
Jenna  3286
Melanie  3736
Aliyah  4007
Julia  3165
Allison  3983
Olivia  3999
Julia  2714
Jaelyn  2699
Whitney  2609
Kathleen  3694
Esmeralda  4457
Kara  2861
Sofia  4278
Roselyn  3993
Harley  3696
Bailey  2915
Abigail  1868
Destiny  2338
Scarlett  4396
Lily  2835
Abigail  2505
Juliet  4208
Grace  3935
Kennedy  4465
Clara  3181
Emily  3118
Abigail  3276
Ally  4339
Brooklyn  1570
Isla  4048
Kennedi  3741
Everly  1129
Elizabeth  3619
Audrina  3842
Serenity  3794
Ariana  3588
Ava  1551
Vanessa  2868
Sara  3359
Adriana  4350
Emily  4310
Cali  3816
Laila  1871
Harmony  1032
Jennifer  3547
Charlotte  2793
Genesis  3121
Fiona  1628
Reese  3656
Penelope  4003
Emily  3206
Reagan  2714
Harper  3047
Isla  4070
Paisley  2193
Ana  3238
Camila  3291
Rose  3817
Zoey  1517
Jazlyn  4067
Camryn  3307
Eva  2408
Angela  3695
Elena  2661
Ariel  2001
Makenna  4180
Jocelyn  973
Sabrina  3801
Olivia  2942
Ivy  3124
Megan  3060
Laila  3909
Luna  4366
Arianna  3662
Brooklyn  3380
Mckinley  2717
Helena  3334
Genesis  1516
Addyson  4074
Hazel  4287
Madelyn  3691
Mckenzie  4188
Daniela  4488
Finley  3765
Melody  2823
Virginia  3178
Milania  3088
Maci  3185
Emily  4231
Maria  3375
Alessandra  4066
Nyla  3391
Naomi  3563
Sophia  2826
Aaliyah  2403
Hayden  3355
Trinity  4052
Aubrianna  4481
Delilah  3003
Paisley  3393
Natalie  3415
Ellie  4183
Olivia  3929
Lydia  4177
Peyton  2848
Makenna  4452
Katherine  4496
Mia  2942
Haven  3035
Cali  1737
Sutton  3102
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Answer #1

Note * The given code is updated. . No changes were made on the main.cpp. Only new comments were included. . User given baby//MedicalRecord.h //Tnclude the needed header files #pragma once #include <string> #include <stdexcept> #include Baby h ////close file myfile.close ( //otherwise else //Throw exception throw invalid argument (Could not open file + filename) //Me//Return return mpName //Method numberOfBirths () int numberOfBirths () //Return size return size; //Method numberofBabiesWitif (size -- 0) //Update DB = new Baby [ARR SIZE]; //Update //Check condition else if (size<ARR SIZE) //Update DB [size++] b;MedicalRecord MR; //Function call MR.buildMedicalRecordfromDatafile (baby data small.txt //Function call int nBirths MR. nu//Function call int nEva- MR.numberOfBabiesWithName (Eva) //Display cout << Number of babies with name Eva: << nEva << en» baby_data large.txt D< Baby-baby. data Baby- baby data_large.trtX baby data_large.tt p x Grace 3385 Callie 2524 Presley 339

Executable code

//Baby.h
//Include the needed header file
#pragma once
#include <string>
using namespace std;

//Class
class Baby
{
    //Access specifier
    public:
       
        //Default constructor
        Baby(){}
       
        //Constructor
        Baby(string s, int w)
        {
            //Initialize name
            name.assign(s);
           
            //Initialize weight
            weight = w;
        }

        //Method getWeight()
        int getWeight()
        {
            //Return weight
            return weight;
        }

        //Method getName()
        string getName()
        {
            //Return name
            return name;
        }

    //Access specifier
    private:
   
        //Declare a variable for name
        string name;
       
        //Declare a variable for weight
        int weight;
};

//MedicalRecord.h
//Include the needed header files
#pragma once
#include <string>
#include <stdexcept>
#include "Baby.h"

//Define default array size
#define ARR_SIZE 200000

//Namespace
using namespace std;

//Class
class MedicalRecord
{
    //Access specifier
    public:
       
        //Default constructor
        MedicalRecord()
        {
            //Initialize size
            size = 0;
        }

        //Destructor
        ~MedicalRecord()
        {
            //Delete
            delete[]bB;
        }

        //Method definition buildMedicalRecordfromDatafile()
        void buildMedicalRecordfromDatafile(string filename)
        {
            //File object
            ifstream myfile(filename.c_str());
           
            //Open file
            if (myfile.is_open())
            {
                //Display message
                cout << "Successfully opened file " << filename << endl;
               
                //Declare a varaible for baby name
                string name;
               
                //Declare a varaible for baby weight
                int weight;
               
                //Loop
                while (myfile >> name >> weight)
                {
                    //Update
                    Baby b(name, weight);
                   
                    //Function call
                    addEntry(b);
                }
               
                //Close file
                myfile.close();
            }
           
            //Otherwise
            else
               
                //Throw exception
                throw invalid_argument("Could not open file " + filename);
        }

        //Method definition mostPopularName()
        string mostPopularName()
        {
            //Declare needed integer varaibles
            int count = 0, tmpcount = 0;
                       
            //Declare needed string varaibles
            string mpName, tmpName;
           
            //Loop
            for (int i = 0; i<size; i++)
            {
                //Update
                tmpName = bB[i].getName();
               
                //Update
                tmpcount = 0;
               
                //Loop
                for (int j = 0; j<size; j++)
                {
                    //Check condition
                    if (tmpName.compare(bB[j].getName()) == 0)
                       
                        //Increment
                        tmpcount++;
                }
               
                //Check condition
                if (count == 0)
                {
                    //Update
                    count = tmpcount;
                   
                    //Function call
                    mpName.assign(tmpName);
                }
               
                //Check condition
                else if (count<tmpcount)
                {
                    //Update
                    count = tmpcount;
                   
                    //Function call
                    mpName.assign(tmpName);
                }
            }
           
            //Return
            return mpName;
        }
       
        //Method numberOfBirths()
        int numberOfBirths()
        {
            //Return size
            return size;
        }

        //Method numberOfBabiesWithLowBirthWeight()
        int numberOfBabiesWithLowBirthWeight()
        {
            //Needed variable
            int count = 0;
           
            //Loop
            for (int i = 0; i<size; i++)
               
                //Check condition
                if (bB[i].getWeight() <2500)
                   
                    //Increment
                    count++;
           
            //Return count
            return count;
        }

        //Method numberOfBabiesWithName()
        int numberOfBabiesWithName(string s)
        {
            //Needed variable
            int count = 0;
           
            //Loop
            for (int i = 0; i<size; i++)
               
                //Check condition
                if (bB[i].getName().compare(s) == 0)
                   
                    //Increment
                    count++;
           
            //Return count
            return count;
        }
   
    //Access specifier
    private:

        //Methos addEntry()
        void addEntry(Baby b)
        {
            //Check condition
            if (size == 0)
            {
                //Update               
                bB = new Baby[ARR_SIZE];
                               
                //Update
                bB[size++] = b;
            }
           
            //Check condition
            else if (size<ARR_SIZE)
               
                //Update
                bB[size++] = b;
           
            //Otherwise
            else
               
                //Display
                cout << "No space in the array to add" << endl;
        }
       
        //Declare needed variables
        int size;
        Baby *bB;
};

//Main.cpp
//Include the needed header files
#include <iostream>
#include <fstream>
#include <string>
#include <cassert>
#include "MedicalRecord.h"
#include "Baby.h"
using namespace std;

//Driver
int main()
{
    //Try block
    try
    {
        //Test the Baby class
        {
            //Create new instance
            Baby babyTest("Testname", 1000);
           
            //Assert
            assert(babyTest.getName() == "Testname");
           
            //Assert
            assert(babyTest.getWeight() == 1000);
        }

        //Test code with small data file
        {
            //Create new instance
            MedicalRecord MR;
           
            //Function call
            MR.buildMedicalRecordfromDatafile("baby_data_small.txt");
           
            //Function call
            int nBirths = MR.numberOfBirths();
           
            //Display
            cout << "Number of births: " << nBirths << endl;
           
            //Assert
            assert(nBirths == 10);
           
            //Function call
            int nEmma = MR.numberOfBabiesWithName("Emma");
           
            //Display
            cout << "Number of babies with name Emma: " << nEmma << endl;
           
            //Assert
            assert(nEmma == 2);

            //Function call
            int nLow = MR.numberOfBabiesWithLowBirthWeight();
           
            //Display
            cout << "Number of babies with low birth weight: " << nLow << endl;
           
            //Assert
            assert(nLow == 2);

            //Function call
            string mostPopularName = MR.mostPopularName();
           
            //Display
            cout << "Most popular baby name: " << mostPopularName << endl;
                       
            //Assert
            assert(mostPopularName == "Sophia");
        }

        //Test code with large data file
        {
            //Create a new instance
            MedicalRecord MR;
           
            //Function call
            MR.buildMedicalRecordfromDatafile("baby_data_large.txt");
           
            //Function call
            int nBirths = MR.numberOfBirths();
           
            //Display
            cout << "Number of births: " << nBirths << endl;
           
            //Assert
            assert(nBirths == 199604);

            //Function call
            int nEva = MR.numberOfBabiesWithName("Eva");
           
            //Display
            cout << "Number of babies with name Eva: " << nEva << endl;
           
            //Assert
            assert(nEva == 566);

            //Function call
            int nLow = MR.numberOfBabiesWithLowBirthWeight();
           
            //Display
            cout << "Number of babies with low birth weight: " << nLow << endl;
           
            //Assert
            assert(nLow == 15980);

            //Function call
            string mostPopularName = MR.mostPopularName();
           
            //Display
            cout << "Most popular baby name: " << mostPopularName << endl;
           
            //Assert
            assert(mostPopularName == "Emma");
        }
    }
   
    //Catch block
    catch (exception &e)
    {
        //Exception
        cout << e.what() << endl;
    }
}

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