#include <stdio.h>
#define NB_PLANETES 8

/* ici la definition du type planete */
typedef struct{
	char nom[10];
	float densite;
	float distance;
	int nbsat;
} planete;

void affichePlanete(planete p){
   printf("%s : densite = %.2f, distance soleil = %.1f, nb satellites = %d", 
   p.nom, p.densite, p.distance, p.nbsat);
}

void afficheToutesPlanetes(planete ps[], int n){
    for (int i = 0; i < n; i++) affichePlanete(*(ps+i));
}

void modifieDensite (planete *p, float v) {
    p->densite = v;
}

int main(){
   planete systemeSolaire[NB_PLANETES] ={{"Mercure", 5.42, 58, 0}, {"Venus", 5.25, 108.2, 0}, 
         {"Terre", 5.52, 149.6,1}, {"Mars", 3.94, 227.9, 2}, {"Jupiter", 1.314, 778.3, 16},
         {"Saturne", 0.69, 1427, 17}, {"Uranus", 1.19, 2869, 15}, {"Neptune", 1.6, 4496, 2}};
   int i;
   float d;
   
   afficheToutesPlanetes(systemeSolaire, NB_PLANETES);
   printf("\n");
   scanf("%d", &i);
   scanf("%f", &d);
   /* on affecte la densite d a la planete d'indice i du tableau systemeSolaire */
   modifieDensite(systemeSolaire+i, d);
   affichePlanete(systemeSolaire[i]);
   printf("\n");
   return 0;
}