Source: https://www.researchgate.net/profile/Leila-Zemmouchi-Ghomari/publication/348845289_Recueil_d'Exercices_Corriges_de_Programmes_en_Langage_C/data/6012d95c45851517ef223d40/Recueil-dExercices-Corriges-de-Programmes-en-Langage-C.pdf