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CentralDeExercicios.cs
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CentralDeExercicios.cs
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using System;
using System.Collections.Generic;
using System.Linq;
namespace CursoCSharp {
public class CentralDeExercicios {
Dictionary<string, Action> Exercicios;
public CentralDeExercicios(Dictionary<string, Action> exercicios) {
Exercicios = exercicios;
}
public void SelecionarEExecutar() {
int i = 1;
foreach (var exercicio in Exercicios) {
Console.WriteLine("{0}) {1}", i, exercicio.Key);
i++;
}
Console.Write("Digite o número (ou vazio para o último)? ");
int.TryParse(Console.ReadLine(), out int num);
bool numValido = num > 0 && num <= Exercicios.Count;
num = numValido ? num - 1 : Exercicios.Count - 1;
string nomeDoExercicio = Exercicios.ElementAt(num).Key;
Console.Write("\nExecutando exercício ");
Console.BackgroundColor = ConsoleColor.Yellow;
Console.ForegroundColor = ConsoleColor.Black;
Console.WriteLine(nomeDoExercicio);
Console.ResetColor();
Console.WriteLine(String.Concat(
Enumerable.Repeat("=", nomeDoExercicio.Length + 21)) + "\n");
Action executar = Exercicios.ElementAt(num).Value;
try {
executar();
} catch(Exception e) {
Console.BackgroundColor = ConsoleColor.Red;
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine("Ocorreu um erro: {0}", e.Message);
Console.ResetColor();
Console.WriteLine(e.StackTrace);
}
}
}
}