public void InversePrenom() { char[] tmp = Prenom.ToCharArray(); Array.Reverse(tmp); Prenom = new string(tmp); Console.WriteLine($"Nouveau prénom : {Prenom}"); }
public string Aprenom() { // string test = prenom.ToLower(); // test.ElementAt(1).ToUpper; // return test; StringBuilder builder = new StringBuilder(); if (Prenom != null) { string s = null; char[] modulatedsurname = Prenom.ToCharArray(); for (int i = 0; i < modulatedsurname.Length; i++) { if (i == 0) // Premier element maj { s = modulatedsurname[i].ToString(); s = s.ToUpper(); builder.Insert(i, s); } else //autres elem minuscule { s = modulatedsurname[i].ToString(); s = s.ToLower(); builder.Insert(i, s); } } } // return (double)(DateTime.Today - _dateDeNaissance).Days / 365; return(builder.ToString()); }