Question

c++
A menu-driven program gives the user the option to find statistics about different baseball players. The program reads from a file and stores the data for ten baseball players, including player’s team, name of player, number of homeruns, batting average, and runs batted in. (You can make up your data, or get it online, for example: http://espn.go.com/mlb/statistics )

Write a program that declares a struct to store the data for a player. Declare an array of 10 components to store the data for 10 baseball players.

The program prints out a menu (in a loop, so this can be done again and again) giving the user a choice to:

print out all users and statistics

print out the statistics for a specific player

print out all data for a specific team

update the data for a particular player (change one of the statistics)

DO ALL WORK IN FUNCTIONS. USE A FUNCTION TO READ THE DATA, A FUNCTION TO PRINT THE MENU, and FUNCTIONS FOR EACH OF THE MENU OPTIONS.

Before the program terminates, give the user the option to store the data in an output file.

Answer 1

Answer:

// The main changes made are changing int batting_avg to double batting_avg so complete data will be displayed instead of all zeroes

// i have changed int choice to char choice

// storeData() i have run a loop containing all data stored in Object structure to be stored in outFile reference

#include <iostream>
#include <fstream>
#include <string>
#include <stdio.h>
#include <stdlib.h>

using namespace std;

const int SIZE = 10;

struct player { //structure of player
int id;
string team;
string name;
int homeruns;
double batting_avg;
int runs;
}object[SIZE]; //reference of array of structure

void loadData();
int loadMenu(int &);
void printAll();
void printSpecific(int );
void printSpecificTeam(string );
void updatePlayer(int , string );
int storeData();

int main() {
char choice; //choice should be taken as char type instead of int
int option,idPlayer, k;
string teamName;
loadData();
do { //menu to be displayed
loadMenu(option);

switch (option) { //different options methods
case 1: printAll();
break;
case 2:
cout << "enter id";
cin >> idPlayer;
printSpecific(idPlayer);
break;
case 3:
cout << "enter team";
cin >> teamName;
printSpecificTeam(teamName);
break;
case 4:
cout << "enter id and team you wnat to update";
cin >> idPlayer >> teamName;
updatePlayer(idPlayer, teamName);
break;
case 5:
k = storeData();
if (k == 1)
cout << "Successfully stored";
else
cout << "error. not stored";
break;
case 6: exit(0);
break;
default: cout << "Oops something went wrong!";
}
cout << "Continue?(Y/N)";
cin >> choice;
} while (choice == 'y' || choice == 'Y');
}

void loadData() { //read data from file
ifstream in("player.txt");
int count = 0;
if (!in)
{
cout << "File can't be opened! " << endl;
}
while (!in.eof() && count<SIZE) {
in >> object[count].id >> object[count].team >> object[count].name >> object[count].homeruns >> object[count].batting_avg >> object[count].runs;
++count;
}

}
int loadMenu(int &option) {
do {
cout << "Enter your choice\n" <<
"1. Print out all players and statistics\n" <<
"2. Print out the statistics for a specific player\n" <<
"3. Print out all data for specific item\n" <<
"4. Update the data for a particular player\n" <<
"5. Store data in file\n" <<
"6. Exit\n";
cin >> option;
if (option < 0 || option > 7) {
cout << "Invalid selection. Try again.\n";
}
} while (option < 0 || option > 7);
return option;
};

void printAll() { //print data after reading from file
for (int i = 0; i < SIZE; i++)
{
cout << object[i].id << " ";
cout << object[i].team << " ";
cout << object[i].name << " ";
cout << object[i].homeruns << " ";
cout << object[i].batting_avg << " ";
cout << object[i].runs << " " << endl;
}

}

void printSpecific(int idp) { //print data of specific player

for (int i = 0; i<SIZE; ++i) {
if (object[i].id == idp) {
cout << object[i].id << " ";
cout << object[i].team << " ";
cout << object[i].name << " ";
cout << object[i].homeruns << " ";
cout << object[i].batting_avg << " ";
cout << object[i].runs << " " << endl;
break;
}
}

}
void printSpecificTeam(string teamName) { //print data of specific team

for (int i = 0; i<SIZE; ++i) {
if (object[i].team == teamName) {
cout << object[i].id << " ";
cout << object[i].team << " ";
cout << object[i].name << " ";
cout << object[i].homeruns << " ";
cout << object[i].batting_avg << " ";
cout << object[i].runs << " " << endl;
}
}
}

void updatePlayer(int idp, string teamName) { //update particular player team by searching it through id
for (int i = 0; i<SIZE; ++i) {
if (object[i].id == idp) {
object[i].team = teamName;
break;
}
}
}

int storeData() { //store data in file
ofstream outFile;
outFile.open("player.txt");
if (!outFile)
{
cout << "File can't be opened! " << endl;
}
for(int count=0;count<SIZE;++count)
{
outFile<< object[count].id <<" "<<object[count].team <<" "<<object[count].name << " "<<object[count].homeruns <<" "<<object[count].batting_avg <<" "<< object[count].runs<<endl;
}

return 1;

}

output: