can you break my program into 3 functions besides the main function?

Can you also fix the coding part for empty File part for me please?

#include

#include

#include

using namespace std;

// size of various arrays

const int MAX_NAME_LENGTH = 21;

const int MAX_ACTIVITES = 365;

const int MAX_PARTICIPANTS = 40;

const int NUM_ACITIVITIES = 27;

// Activity codes

const int ASSEMBLY_LINE = 0;

const int BASKETBALL_SHOOTING = 1;

const int BASKETBALL_GAME = 2;

const int BICYCLING_10MPH = 3;

const int BICYCLING = 4;

const int COOKING = 5;

const int DANCE = 6;

const int FOOTBALL = 7;

const int HIKING = 8;

const int HOUSE_CLEANING = 9;

const int GARDENING = 10;

const int MINIATURE_GOLF = 11;

const int RACQUETBALL = 12;

const int ROWING = 13;

const int RUNNING_6MPH = 14;

const int RUNNING_7MPH = 15;

const int RUNNING_8MPH = 16;

const int SHOPPING = 17;

const int SOCCER = 18;

const int SOFTBALL = 19;

const int STAIRS = 20;

const int SWIMMING_LAPS = 21;

const int TENNIS = 22;

const int WALKING_3MPH = 23;

const int WALKING_4MPH = 24;

const int WEIGHT_LIFTING = 25;

const int YOGA = 26;

// steps associated with each activity

const int ACTIVITY_STEPS[NUM_ACITIVITIES] = {85, 136, 242, 121, 242, 61, 167,

242, 182, 91, 99, 91, 212, 212,

303, 348, 409, 70, 212, 152, 273,

212, 212, 100, 152, 121, 76};

// participant structure

struct Participant {

char firstName[MAX_NAME_LENGTH];

char lastName[MAX_NAME_LENGTH];

double height;

int numActivities;

int activities[MAX_ACTIVITES];

int minutes[MAX_ACTIVITES];

double totalMiles;

};

int main()

{

// file name

char inputFileName[MAX_NAME_LENGTH]; // I've assumed file name length

// print the welcome message

cout << "Welcome to the PSCC Fitness Tracker." << endl;

// prompting user for file name

cout << "Please enter the name of input file: ";

cin >> inputFileName; // read file name

// opening the input file

ifstream inputFile;

inputFile.open(inputFileName);

// if file does not exist

if (inputFile.fail())

{

cout << "File " << inputFileName << " does not exit. Please contact the administrator." << endl;

cout<<"Thank you for using the PSCC Fitness Tracker."<

return 0;

}

// if file is empty

if (inputFile.eof())

{

cout << "File " << inputFileName << " is empty. Please contact the administrator." << endl;

cout<<"Thank you for using the PSCC Fitness Tracker."<

return 0;

}

// participants array

struct Participant participants[MAX_PARTICIPANTS];

int pCount = 0; // count of participants in the array

while (inputFile >> participants[pCount].firstName) // reading first name, if end of file reached it wouldn't loop

{

// reading last name

inputFile >> participants[pCount].lastName;

// reading height

inputFile >> participants[pCount].height;

// reading number of activities

inputFile >> participants[pCount].numActivities;

// for each activity reading it's code and minutes

for (int j = 0; j < participants[pCount].numActivities; j++)

{

inputFile >> participants[pCount].activities[j];

inputFile >> participants[pCount].minutes[j];

}

// incrementing the array count

pCount++;

}

// calculating total miles for each for individual

for (int i = 0; i < pCount; i++)

{

int steps = 0;

for (int j = 0; j < participants[i].numActivities; j++)

{

steps += participants[i].minutes[j]*ACTIVITY_STEPS[participants[i].activities[j]];

}

// calculating distance in feets according the feet of each individual

double feet_distance = ((0.413*participants[i].height)/12)*steps;

// converting feets to miles

participants[i].totalMiles = feet_distance/5280;

}

// sorting the array of participants in descending order of total miles

for (int i = 0; i < pCount-1; i++) // using simple bubble sort

{

for (int j = 0; j < (pCount - i); j++)

{

if (participants[j].totalMiles < participants[j+1].totalMiles)

{

struct Participant temp = participants[j];

participants[j] = participants[j+1];

participants[j+1] = temp;

}

}

}

// printing the results

double total = 0.0; // total miles of all participants

cout << " Tracking Results" << endl;

cout << setw(42) << left << "Name" << "Miles" << endl;

cout <<"-----------------------------------------------------------" << endl;

for (int i = 0; i < pCount; i++)

{

cout << setw(MAX_NAME_LENGTH) << left << participants[i].firstName;

cout << setw(MAX_NAME_LENGTH) << left << participants[i].lastName;

cout << setw(8) << setprecision(2) << fixed << participants[i].totalMiles << endl;

total += participants[i].totalMiles;

}

cout <<" -----------------------------------------------------------" << endl;

cout << setw(42) << left << " TOTAL" << setprecision(2) << fixed << total << endl;

// goodbye message

cout << "Thank you for using the PSCC Fitness Tracker." << endl;

inputFile.close();

return 0;

}