Use the values of an array variable of a procedure in the main routine of the algorithm

When you create a variable within a method / function / procedure, this variable can only be accessed within the scope itself, so you can not access the variable of function 1 being in function 2 unless it is a return or parameter passed by reference.

Another way to do what you need to do is to use a global variable, I do not think it's the best way, but it caters and it's also easier to understand for those starting out.

To create a global variable, we also use the var section, but just below the uses section:

uses
  SysUtils;

var
  jogadores: ?????

  

But here comes a question: What should be the type of the variable    jogadores ? Since for soccer we will have 11, basketball 5 and volleyball 6.

The trick is: we do not need to set the size of a array in the declaration, we can define it in the future. To do this, simply define it as a array of string :

uses
  SysUtils;

var
  jogadores: Array of String;

Now that we have the global variable to store the players, we will create the methods responsible for setting the size of the array and requesting the names to be stored.

  

But how do we set the size of array during the execution of   program?

Simple, we'll use the SetLength function. This function serves both to set the size of a string and the size of a array . In our case, we will define the size of a array , the first parameter is the variable that will be resized and the second is the new size of the variable:

uses
  SysUtils;

var
  jogadores: Array of String;

procedure futebol;
var
  i: integer;
begin
  SetLength(jogadores, 11);
  for i := 1 to 11 do
    begin
      writeln('Digite o nome do jogador ', i);
      readln(jogadores[i - 1]);
    end;
end;

procedure basquete;
var
  i: integer;
begin
  SetLength(jogadores, 5);
  for i := 1 to 5 do
    begin
      writeln('Digite o nome do jogador ', i);
      readln(jogadores[i - 1]);
    end;
end;

procedure volei;
var
  i: integer;
begin
  SetLength(jogadores, 6);
  for i := 1 to 6 do
    begin
      writeln('Digite o nome do jogador ', i);
      readln(jogadores[i - 1]);
    end;
end;

  

Note that this way the first item of array will always be the   position 0 , so when we are assigning we need to subtract 1   of the number the user is viewing.

Now just implement the process you've already done, just changing to jogadores the places that are like jogador :

uses
  SysUtils;

var
  jogadores: Array of String;

procedure futebol;
var
  i: integer;
begin
  SetLength(jogadores, 11);
  for i := 1 to 11 do
    begin
      writeln('Digite o nome do jogador ', i);
      readln(jogadores[i - 1]);
    end;
end;

procedure basquete;
var
  i: integer;
begin
  SetLength(jogadores, 5);
  for i := 1 to 5 do
    begin
      writeln('Digite o nome do jogador ', i);
      readln(jogadores[i - 1]);
    end;
end;

procedure volei;
var
  i: integer;
begin
  SetLength(jogadores, 6);
  for i := 1 to 6 do
    begin
      writeln('Digite o nome do jogador ', i);
      readln(jogadores[i - 1]);
    end;
end;

var
  esporte, verificar: char;
  i: integer;
begin
  writeln('Digite o esporte que voce joga([f - futebol][b - basquete][v - volei])');
  readln(esporte);
  if esporte = 'f' then
    begin
      futebol;
    end
  else if esporte = 'b' then
    begin
      basquete;
    end
  else if esporte = 'v' then
    begin
      volei;
    end;
  writeln('Deseja verificar o nome dos jogadores(s/n)');
  readln(verificar);
  while verificar = 's' do
    begin
      writeln('Digite o numero do jogador');
      readln(i);
      writeln('Nome do jogador ', i, ': ', jogadores[i - 1]);
      writeln('Deseja verificar outro jogador(s/n)');
      readln(verificar);
    end;
  readln;
end.