Question

5.27 LAB*: Program: Soccer team roster (Vectors)

This program will store roster and rating information for a soccer team. Coaches rate players during tryouts to ensure a balanced team.

(1) Prompt the user to input five pairs of numbers: A player's jersey number (0 - 99) and the player's rating (1 - 9). Store the jersey numbers in one int vector and the ratings in another int vector. Output these vectors (i.e., output the roster). (3 pts)

Ex:

Enter player 1's jersey number:
84
Enter player 1's rating:
7

Enter player 2's jersey number:
23
Enter player 2's rating:
4

Enter player 3's jersey number:
4
Enter player 3's rating:
5

Enter player 4's jersey number:
30
Enter player 4's rating:
2

Enter player 5's jersey number:
66
Enter player 5's rating:
9

ROSTER
Player 1 -- Jersey number: 84, Rating: 7
Player 2 -- Jersey number: 23, Rating: 4
...

(2) Implement a menu of options for a user to modify the roster. Each option is represented by a single character. The program initially outputs the menu, and outputs the menu after a user chooses an option. The program ends when the user chooses the option to Quit. For this step, the other options do nothing. (2 pts)

Ex:

MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:

(3) Implement the "Output roster" menu option. (1 pt)

Ex:

ROSTER
Player 1 -- Jersey number: 84, Rating: 7
Player 2 -- Jersey number: 23, Rating: 4
...

(4) Implement the "Add player" menu option. Prompt the user for a new player's jersey number and rating. Append the values to the two vectors. (1 pt)

Ex:

Enter a new player's jersey number:
49
Enter the player's rating:
8

(5) Implement the "Delete player" menu option. Prompt the user for a player's jersey number. Remove the player from the roster (delete the jersey number and rating). (2 pts)

Ex:

Enter a jersey number:
4

(6) Implement the "Update player rating" menu option. Prompt the user for a player's jersey number. Prompt again for a new rating for the player, and then change that player's rating. (1 pt)

Ex:

Enter a jersey number:
23
Enter a new rating for player:
6

(7) Implement the "Output players above a rating" menu option. Prompt the user for a rating. Print the jersey number and rating for all players with ratings above the entered value. (2 pts)

Ex:

Enter a rating:
5

ABOVE 5
Player 1 -- Jersey number: 84, Rating: 7
...

______________________________-

in C++ please

Answer 1

Please take a look at the code after implementing all steps (1) to (7).

I have added inline comments for better understanding.

#include <bits/stdc++.h> 
using namespace std; 
 
void printRoster(vector<int> player, vector<int> rating){ //this funtion prints the roster
        cout<<"ROSTER"<<endl;
        for(int i=0;i<player.size();i++){
                printf("Player %d -- Jersey number: %d, Rating: %d\n",(i+1),  player[i], rating[i]);
        }
}
void addPlayer(vector<int> &player, vector<int> &rating){ //this will add a new player and their rating
        int x, y;
        //get new player information
        printf("Enter player %d's jersey number:\n", player.size()+1);
        cin>>x;
        printf("Enter player %d's rating:\n", player.size()+1);
        cin>>y;
        //add new player information
        player.push_back(x);
        rating.push_back(y);
}
void removePlayer(vector<int> &player, vector<int> &rating){ //this will remove a player 
        int jersey;
        //get jersey of player to delete
        printf("Enter a jersey number:\n");
        cin>>jersey;
        //search for the player to delete
        for(int i=0;i<player.size();i++){
                if(player[i]==jersey){
                        //player found, delete both player jersey and rating
                        player.erase(player.begin()+i);
                        rating.erase(rating.begin()+i);
                        break;
                }
        }
}
void updatePlayerRating(vector<int> &player, vector<int> &rating){ //this will update the rating for a given player
        int jersey, newRating;
        //get player for which we have to update the rating
        printf("Enter a jersey number:\n");
        cin>>jersey;
        //get the new rating to be updated
        printf("Enter a new rating for player:\n");
        cin>>newRating;
        //search for the player to update rating
        for(int i=0;i<player.size();i++){
                if(player[i]==jersey){
                        rating[i]=newRating;
                        break;
                }
        }
}
void output_above_ratings(vector<int> &player, vector<int> &rating){
        int abr;
        printf("Enter a rating:\n");
        cin>>abr;
        cout<<"ABOVE "<<abr<<endl;
        for(int i=0;i<player.size();i++){
                if(rating[i]>abr)
                        printf("Player %d -- Jersey number: %d, Rating: %d\n",(i+1),  player[i], rating[i]);
        }
}
void printMenu(){
        printf("MENU\na - Add player\nd - Remove player\nu - Update player rating\nr - Output players above a rating\no - Output roster\nq - Quit\n\nChoose an option:\n");
}
int main(int argc, char const *argv[])
{
        //Declare vetors to store player information
        vector<int> player;
        vector<int> rating;

        printMenu();
        char command;
        cin>>command;

        //We keep iterating until quit command is sent by the user
        while(command!='q'){
                switch(command){
                        case 'a': addPlayer(player, rating);
                                        break;
                        case 'd': removePlayer(player, rating);
                                        break;
                        case 'u': updatePlayerRating(player, rating);
                                        break;
                        case 'r': output_above_ratings(player, rating);
                                        break;
                        case 'o': printRoster(player, rating);
                                        break;
                }
                printMenu();
                cin>>command;
        }

}

Sample Input/Output below.

MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
a
Enter player 1's jersey number:
10   
Enter player 1's rating:
20
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
a
Enter player 2's jersey number:
20   
Enter player 2's rating:
30
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
a
Enter player 3's jersey number:
30
Enter player 3's rating:
40
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
d
Enter a jersey number:
20
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
o
ROSTER
Player 1 -- Jersey number: 10, Rating: 20
Player 2 -- Jersey number: 30, Rating: 40
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
r
Enter a rating:
35
ABOVE 35
Player 2 -- Jersey number: 30, Rating: 40
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
o
ROSTER
Player 1 -- Jersey number: 10, Rating: 20
Player 2 -- Jersey number: 30, Rating: 40
MENU
a - Add player
d - Remove player
u - Update player rating
r - Output players above a rating
o - Output roster
q - Quit

Choose an option:
q