using System;

public class Program

{

    public static void exo1()

    {

        Console.WriteLine("Quel est votre prénom?");

        string prenom = Console.ReadLine();

        Console.Write("Hello " + prenom);

        Console.WriteLine(", comment vas tu?");

    }

    public static void exo3()

    {

        Console.WriteLine("Syllabe?");              // demande une syllabe à l'utilisateur

        string syllabe = Console.ReadLine();        // met la syllabe dans la variable syllabe

        Console.WriteLine(syllabe+syllabe);         // ecrit la syllabe deux fois

    }

    public static void exo4()

    {

        Console.WriteLine("chaine de charactère 1?");

        string var1 = Console.ReadLine();

        Console.WriteLine("chaine de charactère 2?");

        string var2 = Console.ReadLine();

        Console.WriteLine("var1 = " + var1 + "," + "var2 = " +var2);

        Console.WriteLine("var1 = " + var2 + "," + "var2 = " +var1);    

    }

    public static void exo5()

    {

        Console.WriteLine("Premiere valeur?");

        string val1 = Console.ReadLine();

        int ent1 = Convert.ToInt32(val1);

        Console.WriteLine("deuxieme valeur?");

        string val2 = Console.ReadLine();

        int ent2 = Convert.ToInt32(val2);

        if (ent1>ent2)

        {

            Console.WriteLine(val1);

        }

        if (ent1<ent2)

        {

            Console.WriteLine(val2);

        }

        if (ent1==ent2)

        {

            Console.WriteLine(val1);

        }   

    }

    public static void exo6()

    {

        Console.WriteLine("Premiere valeur?");

        string val1 = Console.ReadLine();                               

        int ent1 = Convert.ToInt32(val1);

        Console.WriteLine("deuxieme valeur?");

        string val2 = Console.ReadLine();

        int ent2 = Convert.ToInt32(val1);

        Console.WriteLine("troisieme valeur?");

        string val3 = Console.ReadLine();

        int ent3 = Convert.ToInt32(val1);

    }

    public static void exo8()

    {

        int i = 0;

            while (i<20){

            Console.WriteLine("ça tourne");

            i++;

            }

        }

    public static void exo8bis()

    {

        for ( int i=0 ; i<20 ; i++){

            Console.WriteLine("ça tourne");

        }

    }

    public static void Main()

    {   

        //exo1();

        //exo3();

        //exo4();

        //exo5();

        //exo6();

        //exo8();

        //exo8bis();

    }

}

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