NEW
Font size
S
M
L
XL
WorksheetsJava-前導&運算子
Total questions: 7
Worksheet time: 4mins
Name
Class
Date
1.
var a = 5;
/*a = a - 2;
a += 1;
*/
a *= 3;
請問上段程式執行完後變數a的值為何?
a)
15
b)
9
c)
12
d)
5
2.
java每一段程式的結尾需添加什麼符號
a)
:
b)
>
c)
<
d)
;
3.
System.out.printf(3*(2-5)-8)
請問此段程式輸出為何?
a)
1
b)
5
c)
9
d)
15
4.
a = 80.3625
請選擇一段程式可正確的輸出80.36
a)
System.out.printf("%.2f\n" , a);
b)
System.out.printf("%.2d\n" , a);
c)
System.out.printf("%2f\n" , a);
d)
System.out.printf("%2d\n" , a);
5.
請問下段程式的結果各為何?
A.2.0/3.0
B.2f/3f
C.2/3
a)
A.0.6666666
B.0.6666666
C.0.6666666
b)
A.0.6666666
B.0.6666667
C.0
c)
A.0.6666667
B.0.6666666
C.0
d)
A.0.6666666
B.0.6666667
C.0.6666667
6.
int grade = 60;
String point = "成績:"
point += "grade = " + grade;
a)
成績:grade = 60
b)
成績 = 60
c)
成績 = grade
d)
grade = 60
7.
int a = 10;
byte b = a * 13;
請問b的值為何?
a)
130
b)
-128
c)
-126
d)
127
Reset
