Revision exam tp1

Question 1

byte

Answer 1

1 octet -128 à +127

Question 2

short

Answer 2

2 octets -32768 à +32767

Question 3

int

Answer 3

4 octets -2147483648 à +2147483647

Question 4

long

Answer 4

8 octets -9233372036854775808 à 9233372036854775807

Question 6

Flottants ou décimaux

Answer 6

4 octets

Question 7

char

Answer 7

2 octets

Question 7

double

Answer 7

8 octets

Question 8

boolean

Answer 8

1 octet true et false

Question 9

byte temperature = 125;
temperature++;
temperature++;
temperature++;

Answer 9

// - 128

Question 9

Types: Sans besoins particuliers java nous encourage à utiliser…

Answer 9

int et double comme types de base

Question 10

short total = 25000;
int note1 = 0
total = note1;

Answer 10

Invalide: Les variables ne sont pas du meme type, (4 octet ds 2 octets)

Question 11

short total = 25000;
int note1 = 0
total = (short) note1;

Answer 11

Valide grace au casting : transformer le resultat de type int en short

Question 12

short total = 25000;
int note1 = 0
total = total + 1

Answer 12

Invalide : le 1, par defaut, cest un entier de type int

Question 13

float salaire = 45000.50f;
int note3 = 5
salaire = (float) note3 / 2;

Answer 13

2.5

Question 14

float salaire = 45000.50f;
int note3 = 5
salaire = note3 / 2f;

Answer 14

2.5

Question 15

int x = 10
var result = x / 3;

Answer 15

// resultat : 3

Question 16

doube moyenne = 10.0;
var result = moyenne / 3

Answer 16

resultat : 3.33333