C++   Im getting errors and dont know how to fix it. ....................................................   //roster.h #ifndef ROSTER_H #define ROSTER_H #include <vector>   int searchPlayer(vector<int> jerseyNum, int jNum); void displayMenu(); void addPlayer(vector<int> &jerseyNum,vector<int> &rating); void deletePlayer(vector<int> &jerseyNum,vector<int> &rating); void displayAboveRating(vector<int> jerseyNum,vector<int> rating); void updatePlayer(vector<int> &jerseyNum,vector<int> &rating); void display(vector<int> jerseyNum,vector<int> rating);   #endif   ==============================   // Roster.cpp   #include <iostream> #include <vector> using namespace std; #include "Roster.h"   int searchPlayer(vector<int> jerseyNum, int jNum) { for (unsigned int i = 0; i < jerseyNum.size(); i++) { if (jerseyNum[i] == jNum) return i; } return -1;   } void displayMenu() { cout << "\nMENU" << endl; cout << "a - Add Player" << endl; cout << "d - Delete Player" << endl; cout << "u - Update Player Rating" << endl; cout << "r - Output Players above a rating" << endl; cout << "o - Output Roster" << endl; cout << "q - Quit" << endl;    cout << "Enter Choice :"; } void addPlayer(vector<int> &jerseyNum,vector<int> &rating) { int jnum,rate; cout << "Enter a new Player's jersey number :"; cin >> jnum; cout << "Enter the player's rating :"; cin >> rate;    jerseyNum.push_back(jnum); rating.push_back(rate); } void deletePlayer(vector<int> &jerseyNum,vector<int> &rating) { int jnum; cout << "Enter a Player's jersey number :"; cin >> jnum; int index = searchPlayer(jerseyNum, jnum); if (index == -1) { cout << "** Player not found **" << endl; } else { jerseyNum.erase(jerseyNum.begin() + index); rating.erase(rating.begin() + index); } } void displayAboveRating(vector<int> jerseyNum,vector<int> rating) { int rate; cout << "Enter a rating :"; cin >> rate; cout << "ABOVE " << rate << endl; for (unsigned int i = 0; i < jerseyNum.size(); i++) { if (rating[i] > rate) { cout << "Player" << (i + 1) << " -- Jersey Number:" << jerseyNum[i] << ", Rating:" << rating[i] << endl; } } }   void updatePlayer(vector<int> &jerseyNum,vector<int> &rating) { int jnum,rate; cout << "Enter a Player's jersey number :"; cin >> jnum; int index = searchPlayer(jerseyNum, jnum); if (index == -1) { cout << "** Player not found **" << endl; } else { cout << "Enter the player's rating :" << endl; cin >> rate; rating[index] = rate; } }   void display(vector<int> jerseyNum,vector<int> rating) { cout << "ROSTER" << endl; for (unsigned int i = 0; i <jerseyNum.size(); i++) { cout << "Player" << (i + 1) << " -- Jersey Number:" << jerseyNum[i] << ", Rating:" << rating[i] << endl; } }   ======================================   // main.cpp   #include <iostream> #include <vector> using namespace std; #include "Roster.h"   int main() { int jnum,rate; char choice; vector<int> jerseyNum; vector<int> rating;    for(int i=0;i<5;i++) { cout<<"Enter player "<<(i+1)<<"'s jersey number: "; cin>>jnum; jerseyNum.push_back(jnum);    cout<<"Enter player "<<(i+1)<<"'s rating: "; cin>>rate; rating.push_back(rate);    }    while(true) { displayMenu(); cin>>choice; // Based on the user choice the corresponding case will executed switch (choice) { case 'a': { addPlayer(jerseyNum,rating);    } continue; case 'd': { deletePlayer(jerseyNum,rating);       continue; } case 'u': { updatePlayer(jerseyNum,rating); continue; } case 'r': { displayAboveRating(jerseyNum,rating);    continue; } case 'o': { display(jerseyNum,rating);   continue; } case 'q': { cout << "** PROGRAM EXIT**" << endl; break; } default: { cout << "Invalid Choice" << endl; continue; } } break; }      return 0; }