# include <stdio.h>
# include <stdlib.h>

int main(void) {
	int lundi;
	int mardi;
	int mercredi;
	int jeudi;
	int vendredi;
	printf("1er jour : ");
	scanf("%d", &lundi);
	getchar();
	printf("\n2e jour : ");
	scanf("%d", &mardi);
	getchar();
	printf("\n3e jour : ");
	scanf("%d", &mercredi);
	getchar();
	printf("\n4e jour : ");
	scanf("%d", &jeudi);
	getchar();
	printf("\n5e jour : ");
	scanf("%d", &vendredi);
	printf("\nMoyenne : %.2f", (double) (lundi + mardi + mercredi + jeudi + vendredi) / 5);
	return EXIT_SUCCESS;
}